How to calculate your period for the next month. What is the menstrual cycle and its duration

Reading time: 6 min.

To control the state of her health, choose the right moment for conception, determine the date of the next menstruation and childbirth, a woman needs to correctly count her menstrual cycle and mark her critical days.

You can do this using a diary or special applications for your smartphone.

The average length of the menstrual cycle is 28 days, a range from 21 to 35 days is also considered normal. The International Association of Gynecologists (FIGO) has revised the concept of norms, so slightly different figures can be found in the literature - 24-38 days.

In teenage girls, it is established in the first two years after menarche. Fluctuations from 20 to 60 days during this period are natural.

Normal periods should last 3-7 days.

With a 28-day cycle, ovulation occurs approximately on the 13-14th day. If there was no fertilization, then menstruation begins after 14 days. But all women are individual, so the time of ovulation may shift.

But the duration of the second (luteal) phase is relatively constant - 14 days (plus or minus 2). Therefore, the duration of the entire cycle usually changes due to the first phase. You can read more about the phases here.

Example: the start date of the last menstruation is March 1, the cycle is regular - 26 days. The start date of the next period is March 27.

Lucky are those women who fit into the classic parameters. They can easily calculate the start of menstruation next month and the date of ovulation, this allows them to be prepared for the upcoming changes.

What to do in a situation where the parameters differ from the average? How to calculate for girls with irregular periods? In this case, recording all changes and various calculator applications will help.

2. What can be calculated from the calendar?

The most basic way is to keep a menstrual calendar. You can ask your gynecologist for it, or you can use a regular mini-calendar.

The calendar is a table with cells and dates opposite each month. They should mark the days when menstruation begins (see picture below).

If you use your imagination, you can use additional colors or icons to mark the intensity of bleeding and pain.

Some women feel ovulation easily. It is during this period that a woman can become pregnant.

Ovulation is characterized by:

From this calendar you can obtain the following information:

1. 1Cycle duration.
2. 2Regularity of menstruation.
3. 3Number of days with bleeding.

3. Advanced level

For fans of modern technology, many different applications have been developed that can take on the function of a calendar and supplement it with new properties.

The developers offer various types of women's calendars for free download.

3.1. Clue – menstrual tracker

This is an application for IOS and Android, which is recognized as the best according to the American College of Obstetricians and Gynecologists (ACOG).

With its help, you can mark the days when you had sex and take contraceptives on a schedule.

All data can be password protected to maintain confidentiality.

3.2. Flo app

This is a women's calendar with advanced features. With its help, you can also track the length of your cycle, find out about the approximate days of ovulation, and calculate the optimal days for conception.

This app can record your basal temperature, adding value to your phase information.

If pregnancy is delayed and occurs, the calendar switches to gestation monitoring mode. It allows you to track the weeks of your pregnancy, gives useful tips and tells interesting facts.

The application allows you to monitor your lifestyle:

1. 1Weight.
2. 2The amount of liquid you drink.
3. 3Duration of sleep.
4. 4Sexual relations.
5. 5Mood.

All calendar data can also be protected with a password.

There are a lot of applications for cycle registration, but the more advanced ones have approximately the same set of functions. The differences lie in the design of the pages, which each woman can choose for herself.

4. Basal temperature chart

If there is complete confusion with the menstrual cycle, then the phases can be calculated using the basal temperature chart.

In a healthy woman, basal temperature depends on the follicular and luteal phases.

Researchers found back in 1888 that women experience low-grade fever shortly before menstruation, and during menstruation the temperature drops.

A.I. Rubel at the beginning of the 20th century was able to connect this condition with the functioning of the endocrine system. Already in 1950, Palmer proved in experiments that the predominance of estrogen lowers rectal temperature, and with an increase in progesterone it increases.

It is important to measure basal temperature correctly:

1. 1Starts on the first day of menstruation, use a mercury thermometer.
2. 2Measurements are taken in approximately one and the same time, optimally from 6 to 8 am. But definitely after a night's sleep. Sleep duration should be at least 3 hours.
3. 3The thermometer is brought down to the minimum mark, leave it next to the bed in the evening so that you don’t have to get up to use it.
4. 4The thermometer is inserted rectally to a depth of 3-4 cm, immediately after waking up. You cannot get up or move in bed.
5. 5Remove the thermometer and evaluate the result. After use, it is treated with an antiseptic, shaken and put in a safe place.
6. 6The measurement result is entered on a special schedule. Days are located on the horizontal axis, and degrees are located on the vertical axis. For each cycle a new graph is drawn.
7. 7Temperature is marked with dots, which are then connected into a curve. By its nature, you can determine the phases, day of ovulation or its absence.

On the graph you can make notes about additional factors that may affect the accuracy of measurements:

1. 1Sex.
2. 2Poor night's sleep.
3. 3Diseases.
4. 4Alcohol consumption.
5. 5Violation of measurement time, physical activity.

This will allow you to exclude single days with abnormal temperatures from the schedule.

The basal temperature chart for a healthy woman has certain characteristics (see figure below).

From the first day of the cycle until the end of menstrual flow, the temperature drops from 37°C to 36.3-36.5°C. Further, until the middle of the cycle (ovulation), it fluctuates slightly within these limits.

During ovulation, an increase in temperature to 37.1-37.3°C is observed. This may last 3-4 days.

The entire second luteal phase is characterized by fluctuations in the range of 37.0-37.4°C. Before menstruation, BT drops to 36.8°C.

The average temperature of the follicular and luteal phases should differ by 0.4-0.5 ° C.

To accurately determine this indicator, you need to find the arithmetic mean for each half of the cycle and compare them.

To obtain an assessment of ovarian function, measurements are required for at least 3 months. Analysis of one single graph is not indicative.

4.2. Reasons for deviations

Basal temperature (BT) is rarely measured by healthy women who do not have problems with conception or menstruation.

Most often, this technique is used by those who are trying to establish the causes of cycle disorders or infertility.

Based on the deviations in the schedule, we can assume the reasons for the failure:

1. 1If BT increases during menstruation, then this may be a symptom of chronic endometritis.
2. 2The graph is above normal during the first phase indicates a lack of estrogen.
3. 3The temperature rises smoothly, within 3-4 days – disruption of egg maturation. A monotonous curve without rises is observed in the absence of ovulation.
4. 4Duration of the second phase is 10 days and less – luteal phase deficiency.
5. 5Low temperature in the second phase– insufficiency of the corpus luteum.
6. 6Delay of menstruation, and the BT level remains more than 37 degrees - pregnancy is likely.

With its help, you can evaluate the formation of a dominant follicle, ovulation and the gradual growth of the corpus luteum.

You can also rely on hormone tests (estradiol, progesterone, FSH, LH, etc.), they will not tell you the cause of the disorders, but will indicate deviations.

The menstrual cycle reflects not only the state of a woman’s reproductive system, but is also an indicator of the overall health of the body.

Changes in the regularity, duration of menstruation and the amount of blood loss can become symptoms of various pathologies of the genital organs, pituitary gland or endocrine glands, as well as temporary functional disorders.

1. 1Atlas of pediatric and adolescent gynecology: Transl. with him. / Ed. IN AND. Kulakova. - M: GEOTAR-MED, 2004
2. 2Gynecology. National leadership. Ed. IN AND. Kulakova, G.M. Savelyeva, I.

   B. Manukhina - GEOTAR-Media, 2009

3. 3Gynecology: a textbook for students of medical universities. Kulakov V.I., Serov V.N. Gasparov A.S. – M.: Medical Information Agency LLC. – 2005.

Source: http://sterilno.net/gynecology/menses/rasschitat-cikl.html

How to calculate your periods correctly? Menstruation calendar, menstrual cycle - comprehensive information for women

Why did nature create woman? It would seem a strange question. Of course, a woman is needed to help a man in spiritual matters, to support him, to feed him, to raise children.

But in fact, the main purpose of a woman in nature is to bear and give birth to a child. This is a feature of the female reproductive system.

Every cell of her body acts so that she can reproduce her own kind.

Female reproductive system

The female reproductive system operates through the ovaries and uterus. It is worth understanding what happens in the ovaries, and what part the uterus takes in this process. An egg matures in the ovaries and is then released into the abdominal cavity. In the uterus, under the influence of sex hormones, changes occur in the endometrium so that the fertilized egg can be fixed in it after conception.

You need to understand that eggs, unlike male sperm, are limited in number.

Even in the womb, a girl’s 400-450 eggs mature, which will exist until the end of reproductive age. By the way, about him.

A woman's reproductive age begins at 15-18 years and ends at about 40-50 years, different for each woman. Then comes menopause, when hormones are produced to a lesser extent.

The menstrual cycle and menstruation are terms that you need to know in order to be able to calculate your periods, understand how conception occurs, and so on.

Menstruation and menstrual cycle: what is the difference?

So, the first term you need to understand is the menstrual cycle. This is a rather complex process in a woman, which is characterized by cyclical changes in the reproductive, endocrine, and nervous systems.

Menstruation is the discharge of blood from the genital tract caused by the rejection of an unfertilized egg and the lining of the uterus. Typically, a girl's first menstruation begins at 10-12 years of age.

So, now it is clear that these two words mean different processes, and not vice versa, as many people think. In simpler terms, the menstrual cycle is the time from the start of one period to the start of the next month. But it must be said that the cycle includes several stages, knowing which, it is not difficult to understand how to correctly calculate your periods.

Phase 1 is the period of time from the first day of the appearance of blood until the moment of ovulation, that is, the release of the egg into the body cavity. This action occurs under the influence of the female hormone estrogen. The phase is called follicular.

Phase 2 – luteal phase, the stage from the release of the egg to the next menstruation. The action of the main hormone is accompanied by the pregnancy hormone progesterone.

Thus, if conception occurs during the period of ovulation, the action of the main hormone slows down and is replaced by a second one. And if there was no conception, then the upper layer of the endometrium, along with the egg, is rejected, and menstruation begins.

Length of the menstrual cycle. Norm. Pathology

Now you need to figure out what the normal length of the menstrual cycle is, why it is this way, and what deviations from the norm there are.

So, the normal menstrual cycle lasts about 28 days for most women and girls, but it also happens that the interval between menstruation reaches 35 days or 21. These figures are again explained by female physiology.

The first phase of the cycle is aimed at ensuring that the egg matures and ovulation occurs, the second phase is aimed at changing the endometrium if conception occurs.

If fertilization of the egg does not take place, the functional layer of the endometrium departs, and after some time menstruation occurs.

Why don't my periods come on time?

If your period does not come on days 36-39, and the possibility of pregnancy is excluded, you should think about the woman’s health. The absence of menstruation can be caused by many diseases of the female reproductive system and hormonal changes.

A delay can be caused by oral contraceptives, stress or a cold, and polycystic ovary syndrome, which is also common nowadays.

If after 7-8 days your cycle does not return to normal, you need to visit a doctor to find out the reasons why you are not getting your period.

In order for the discharge to be regular and to be able to conceive a child, a woman needs to take vitamins, especially those containing lutein, eat right, and be less nervous at work. After all, you must agree that health is more important, especially if you want to become the mother of a beautiful and healthy baby.

How to find out when your next period will come?

After reading the above, the question may arise: “How to calculate the period of menstruation?” In fact, there is nothing complicated about it. You will need attentiveness, a good memory, a piece of paper or a calendar, a red pen and a desire to know when your next period is expected.

In order to schedule your periods and calculate their duration, you need to know the date when the discharge began and the day when it ended. It's best to mark them on a calendar or write them down in a notepad.

In her notebook, the girl must note the duration of her period and her feelings at the same time, without forgetting anything, otherwise the calculation will be incorrect.

For the busiest people, there are special programs on the phone that can be locked with a password and used every month. At the same time, they will remind you of the next menstruation with a special signal or a pop-up window.

How to make a monthly calendar?

It has already been said that in order to calculate your periods, you will need a calendar. It's better if it's large. Then it is more convenient to note the intensity of blood discharge. According to gynecologists, this will help you determine the pain of menstruation, because if it is accompanied by severe pain, it would be advisable to check your health.

So, the girl is on the first day of her period, the discharge is spotty and does not cause any inconvenience. She should take her calendar, which is designed specifically for this, and circle this day with a red pen, and write below with what intensity the blood is flowing and whether there is pain.

If you are using a small calendar, you need to shorten the word to one letter, that is, if your periods are spotting and painless, then you can write it like this: “B and M.” This is how every day is celebrated until the last and a characteristic is given to each one.

The discharge can be copious, slight, medium and, as already mentioned, spotting.

The last day of menstruation has passed. Now you can live in peace for a month. The girl continues to celebrate her menstruation every day next month, until the last.

When information for two months has appeared, it is possible to determine on what day ovulation will occur. To do this, you need to subtract 14 from the last day of the cycle. Around this time, the egg will be released from the ovary, and it is quite possible that conception will occur.

Why do you need to know the date of your next menstruation?

So, if a female representative can calculate her periods, she will not have to run to the store on the day the discharge starts and buy pads to ensure personal hygiene. She will already have several necessary things for this period in her purse.

Another comical reason is that a young man or husband will know when to agree with his beloved in everything and smile, even if he doesn’t like something, or quietly go to the TV so as not to irritate her. Then there are more serious reasons: a longer menstrual cycle may indicate ovarian dysfunction, which delays ovulation.

Also, a delay or too short interval between periods may indicate serious illness and the inability to get pregnant.

Calendar method as a remedy for unwanted pregnancy

We talked above about how to calculate your periods in order to increase your chances of having a child. But there are situations in life when a girl is still too young to have children, so she uses the calendar method to prevent pregnancy.

This method is quite simple. During ovulation and 3 days after it, sexual intercourse is excluded. But, as already mentioned, the menstrual cycle tends to shift under the influence of various factors, so this method will not provide a 100% guarantee of results.

But if a girl prefers this method, a period calculator will help her. With its help, you can calculate both ovulation and the days when sex will be safe.

The state of women's health can be determined by the regularity of the menstrual cycle. Menstruation, occurring at the same frequency, is a kind of “biological clock” that helps plan conception. How to find out your menstrual cycle and calculate it correctly? There's nothing complicated about it.

All processes associated with the reproductive function of the female body are based on the ratio of sex hormones in the blood. The menstrual cycle has three phases:

• Follicular.

Lasts from 5 to 20 days, and begins from the first day of bleeding. It is characterized by intensive follicle growth and egg formation. Estrogen circulates in the blood in large quantities, giving impetus to the synthesis of luteinizing hormone. In the uterine cavity, a new layer of endometrium grows at an accelerated pace in order to prepare for the reception of a fertilized egg.

• Ovulatory.

The phase lasts no more than 48 hours. During this period, the mature follicle bursts and releases the corpus luteum. The pituitary gland synthesizes the hormone lutropin to accelerate its growth. A large amount of progesterone accumulates in the blood, which promotes the fertilization process.

• Luteal.

If conception has occurred, the corpus luteum actively stimulates the production of luteinizing hormone. It nourishes the fertilized egg until the placenta forms. When pregnancy does not occur, the corpus luteum stops developing and atrophies. The loosened endometrium, together with the frozen egg, is rejected and excreted from the body in the form of menstrual flow.

Gynecologists consider a normal cycle to last at least 21 days and no more than 35 days. On average it lasts 28 days. The reasons for the lengthening or shortening of specific phases may be hormonal imbalance caused by stress, taking certain medications, or an acute viral infection.

Calculation

Many women who are planning a child are interested in how to calculate the menstrual cycle. The menstrual cycle is a time period that lasts from the beginning of one period to the beginning of the next. From what day of menstruation should the cycle be counted? The first day of the cycle is usually taken into account the first day of bleeding, and the last day is the day before the onset of the next menstruation.

Source: freesoft.ru

Before calculating the menstrual cycle, you need to create an individual diary or calendar of “critical” days. The start and end dates of menstruation are recorded in it for six months. If during this period of time the cycle is not the same in duration, then its average value should be calculated. To do this, the sum of the number of days in a cycle for 6 months is added up and divided by 6.

For example, a woman had the following cycle length for 6 months: January - 26 days, February - 28 days, March - 26 days, April - 30 days, May - 27 days, June - 26 days. Let's find out the sum of days: 26+28+26+30+27+26= 163 Average cycle length: 163/6=27 days.

Now you can independently make an approximate calculation of the menstrual cycle to find out the date of the next ovulation and the start of bleeding. Let's consider an example: menstruation began on January 1, and the next one on January 26. This means the cycle duration is 25 days. Menstruation occurs at the same frequency. Consequently, the upcoming discharge will begin on February 19, and ovulation occurs in the middle of the cycle - February 6-7.

Why do you need to calculate the duration of the menstrual cycle? Firstly, cycle counting makes it possible to determine the most favorable days for conceiving a child. If a couple knows exactly the period of ovulation, then the chances of fertilization increase several times.

Calculating the menstrual cycle also helps:

• prepare in advance for the onset of menstrual flow (take with you
• pads, take measures to dull the symptoms of PMS);
• strengthen measures to ensure contraception during “dangerous” days;
• pay attention to the delay of menstruation in time and find out the reasons for its occurrence;
• plan favorable days to visit

Menstruation accompanies a woman most of her life. A regular monthly cycle is the key to women's health. For girls who have recently encountered this process, there is a lot of secret, hidden, unknown. What is a monthly cycle - how to calculate its duration, what day to start from, how long does each phase last?

Girls begin menstruation on average between 14 and 16 years of age. Due to individual characteristics and in the presence of pathologies, menstruation appears at an earlier age - from 9 years, and later - 17-18 years. Doctors call a woman's normal cycle a duration of 28 days. But under conditions of constant exposure to unfavorable factors, an upward deviation of 4 days is allowed. Therefore, a cycle of 32 days is normal.

What does a woman's menstrual cycle mean? A sequence of events that constantly repeats itself. The process in the female body is controlled by hormonal levels. The entire cycle is divided into 4 parts, but conventionally it is usually divided into 2.

Follicular phase

Under the guidance of the brain - the pituitary gland and with the help of the central nervous system, the ovaries produce sex hormones. In the first phase, estrogen predominates. It is responsible for the formation of follicles and the development of eggs in them. Initially, a large number of follicles appear in the ovaries. Within a week, a dominant one appears and an egg develops in it. In parallel with this process, the structure of the inner layer of the uterus, the endometrium, changes. How to count the follicular phase at home? There is a calendar method for this. The calculation is very simple. Add the number of days or look at the calendar. The calendar method is used as the basis for the online calculator. You don’t even have to bother yourself with counting, just enter the date the cycle started and ended. In 12-14 days, the development and preparation process is completed. The next phase begins in the body.

Ovulation

It is generally accepted that ovulation in a healthy woman’s body occurs from days 12 to 16 of the cycle. The ideal option for a menstrual cycle of 28 days is day 14. With a duration of 32 days - 16 days. At this moment, hormonal changes occur in the woman’s body. Estrogen levels decrease, progesterone levels increase. A sharp jump leads to rupture of the follicle. The egg comes out in search of sperm. This phase lasts no more than 2 days for a woman.

Luteal phase

Immediately after ovulation, progesterone remains in the predominant majority. Under its influence, the egg continues to develop. The structure of the endometrial layer changes. It becomes loose so that the fertilized egg can quickly gain a foothold in the uterine cavity. After fertilization, the egg develops autonomously. After 7–10 days, it begins to move through the tubes into the uterine cavity. Implantation occurs. From this moment the pregnancy is considered completed. If fertilization does not occur, 10 days after ovulation the body begins to prepare for menstruation. The uterus uses sedentary muscles. It makes intense contractions and tries to tear away the endometrium. After a few more days, the final phase of this cycle begins, and it is also the beginning of the next one.

Desquamation phase

Nothing more than menstruation. Under the influence of hormones, blood circulation in the pelvic organs increases, blood vessels dilate, and stagnant blood exits through the uterus. At this time, the endometrial layer is shed, and in menstrual flow it looks like clots. Menstruation in women lasts from 3 to 5 days. All deviations up and down are deviations. The beginning of menstruation is a renewal phase. Restoration, transformation. The uterus is cleared of the previous layer of endometrium, ejects the unfertilized egg and is already preparing for a repeat process all over again. This ends the current menstrual cycle and begins the next one.

Typical house cycle calculation

How to calculate the length of your menstrual cycle is a method usually used by women who use a natural method to prevent unwanted pregnancy. How can a woman carry out a regular calculation of her house using the calendar method?

From the beginning of menstruation, mother, sister, friend, doctors recommend having a regular calendar and marking the start and end dates of menstruation. They should be used to guide the usual calculation of duration. The start date of the previous menstruation is considered the first day of the cycle. The date of the next menstruation is its end. For example, menstruation began on September 22, the next one began on October 24. Then the duration of the menstrual cycle is 32 days.

The usual calculation of a woman's menstrual cycle is complicated by irregular cycles. After all, for many women, menstruation does not come on time. Then the gynecological count is averaged. Data will be required for at least 6 months, preferably a year. Then add up the duration of all cycles and divide by the number of months. For example, 28+32+27+33+28+40 = 188 days. Divide the number by 6 months, the average length of the menstrual cycle is 31 days.

The calendar method allows you to obtain the total duration of a woman’s entire cycle. To find out how long each phase lasts, you should use another calculation method - measuring basal temperature. It is often used in gynecological practice.

Calculation of each phase of the house cycle

Based on basal temperature readings, you can determine the phase of the cycle. For the most part, women are interested in the moment of ovulation. After all, only a week before it begins and 2 days after ovulation is considered a favorable period for conception. Basal temperature is used to initiate pregnancy and to prevent it. You can determine when your period will start.

After ovulation, no more than 6 days pass before the next period begins. Changing this rule is considered a deviation.

Basal temperature is measured by a woman in the morning without getting out of bed. A mercury thermometer is used to measure. Record the start date of menstruation, mark the temperature on the graph every day, and connect it with a line. To get the most complete picture of the duration of each phase, measurements should be carried out for at least 3 months, preferably six months. It should be remembered that a healthy woman has 2 cycles a year without ovulation. This is how the body rests. After 35 years there are about 6 such cycles.

1. If the basal temperature chart shows no significant delay or increase in temperature, it means there was no ovulation in the cycle.
2. If the changes are minor, ovulation is weak.
3. If in the second phase there is a decrease in temperature again and an increase again. The basal temperature indicator remains at 37 degrees - egg implantation has occurred, a pregnancy test should be performed.

Measuring basal temperature will allow you to determine the presence of pregnancy even before the test shows it. In addition, whereas the gynecological calculation gives only an average value. The basis is ovulation in the middle of the cycle. Although in fact it can occur on any day of the cycle, even when menstruation occurs. Hence the deviation of the gynecological pregnancy period from the present one by 1–2 weeks in one direction or the other. The exact date of ovulation allows you to determine the real date of birth.

Discharge in each phase of the menstrual cycle

You can determine which phase lasts by looking at the vaginal discharge. We'll have to keep an eye on them for a few months. Then the woman will know exactly when and what happens in her body:

1. In the first phase, the discharge is scanty, practically absent. Odorless, transparent or .
2. During ovulation, a change in consistency and quantity occurs. The discharge becomes more abundant. Transparent, viscous. Reminds me of egg white. Sometimes blood particles are present. The discharge takes on a pink tint or is smeared with brown.
3. In the second phase they remain abundant. There is a change again. The color is white, the consistency is thick.
4. Before menstruation, the discharge becomes a little less. A brown tint appears. When calculating the duration of the menstrual cycle, days with brown spotting are not taken into account. If they are followed by full periods.
5. During pregnancy, the discharge remains thick and the amount increases.

The normal monthly cycle is the same every month. However, due to the fact that many internal and external factors influence a woman’s body, the timing changes. For example, ovulation does not occur in the middle of the cycle, periods are late or start earlier.

Factors influencing the length of the menstrual cycle

Gynecological diseases are not always to blame for cycle disruption. Failure occurs due to hormonal imbalance. Various factors can affect hormone levels, including gynecological diseases. For example:

• climate change;
• physical exercise;
• nervous system disorder;
• illnesses with fever;
• viral disease;
• thrush;
• medicines;
• uterine fibroids;
• cervical erosion;
• endometriosis;
• endometritis;
• change in a woman's weight;
• bad habits;
• nutrition.

If the cycle is irregular, all these factors should be taken into account to calculate its average duration. If a woman underwent treatment and there were serious psychological stresses, such a cycle should not be taken into account in the calculations.

All methods for calculating the monthly cycle can be done at home. If desired, use an online calculator on the Internet. Every woman should know the length of her cycle. The well-being of a future pregnancy depends on its regularity. After all, sooner or later every woman will think about a child. A constant delay in the menstrual cycle indicates the presence of problems in women's health. You should seek help from specialists. In some cases, you will have to undergo hormonal therapy. An irregular menstrual cycle is allowed only at the beginning of its formation, 2 years after the start of the first menstruation.

Calculation of the day of ovulation, menstrual cycle and days favorable for conception and pregnancy.

Using this calendar you can calculate the days ovulation, that is, when the probability of pregnancy is maximum and determine the most favorable days for conceiving a child (boy or girl) without pharmacy ovulation tests for determining days of ovulation. The conception calendar helps women planning pregnancy to calculate the days of ovulation and create a personal conception calendar. You can chart your female menstrual cycle months in advance! You will receive a menstrual calendar for 3 months, which will indicate: ovulation day, days favorable for conception, days to conceive a boy and a girl. Do not confuse the duration of menstruation (period) and the duration of the menstrual cycle! Interactive ovulation calendar: hover over a day on the calendar and read additional information.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 January February March April May June July August September October November December

20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

Notes
. When you hover over the days in the calendar, additional information will appear. The duration of the menstrual cycle and the duration of menstruation itself are different things. The duration of menstruation or "period" is individual and usually lasts 3 days and does not affect ovulation day. If menstruation takes less than 2 or more than 7 days, you need to contact gynecologist. The average cycle duration varies from person to person. (usually from 21 to 35 days) How to calculate the length of the menstrual cycle: from the day of the end of the previous ones to the day the next “menstruation” begins. Typically this is 28 days. The first day of your period is the first day of the menstrual cycle.

Color coded
period
ovulation day the likelihood of getting pregnant is high (conceiving a boy)
the probability of getting pregnant is average (conceiving a boy)
the probability of getting pregnant is average (conceiving a girl)
the chance of getting pregnant is slightly lower
the probability of getting pregnant is low (conditionally safe days)

Topic of this page: ovulation calendar free, ovulation test, ovulation, ovulation chart, time of ovulation, how to calculate “safe” days?, is it possible to get pregnant immediately after menstruation (you can!). Ovulation - the readiness of the egg for fertilization - occurs approximately in the middle of the menstrual cycle. The egg can be fertilized within a short time, this period is from 12 hours to two days. All this time, the female reproductive cell moves towards the uterus, where the development of the future fetus should occur; it is at this stage that the meeting with male sperm should occur. Considering that sperm, once in the fallopian tubes, can remain viable for up to 5-7 days while waiting for an egg, conception is possible even if sexual intercourse was a week before ovulation, and by the way, this day may be immediately after menstruation. The ovulation period is the most favorable time to conceive.

One of the ways to plan is to choose the right time conception– Shettles method. This method is based on knowledge of the lifespan of male sperm in a woman's reproductive tract. Sperm can remain active for up to five days, so couples can conceive a child by having intercourse before the release of the egg (ovulation). If you want a daughter, plan sexual intercourse a few days before ovulation, son, plan sex 12 hours before ovulation. At irregular cycle other methods of determination should be used ovulation, For example, BT (basal temperature). Please add this page to social networks and blogs.

You can also use the alternative ovulation calculator.

Ovulation - the readiness of the egg for fertilization - occurs approximately in the middle of the menstrual cycle. If menstruation occurs every 28 days, then ovulation occurs around day 14. If your cycle is shorter (for example, 21 days) or longer (about 35 days), ovulation can be expected on days 8-11 or 16-18 of the cycle, respectively. Our ovulation calculator will help you accurately calculate the day of ovulation, and will also show the probability of pregnancy on each day. Also carefully read the notes at the bottom of this page. The most fertile days during each cycle (the days you are most likely to become pregnant through unprotected sex) include ovulation day and the days before. These are the days of maximum fertility. High ability to conception also observed for several days before. At this time you also have chances of getting pregnant. Outside of this “fertility window,” which lasts about six days, the chances of getting pregnant are very low.

You may also be interested in an online pregnancy test. You can also take a test on our website for how many children there will be or just play TETRIS online.

For several months ahead, use our calculator! You can include a prediction of the gender of the unborn child in order to additionally highlight in the calculation results the days on which the probability of conceiving a boy or girl is higher.

Ovulation calculator with baby gender prediction

Calculation option:

Prediction of baby's gender:

Start date of last menstruation:

Start date of penultimate menstruation:

Cycle duration:

The duration of the cycle is from 21 to 35 days. On average 28 days.

28 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 days

Duration of menstruation:

The duration of menstruation is from 2 to 7 days. On average 5 days.

5 2 3 4 5 6 7 days

Number of months for calculation:

6 1 2 3 4 5 6 7 8 9 10 11 12 months

The release of a mature cell into the female reproductive tract is called ovulation, which our online calculator will help you calculate. But being able to determine these moments herself is very important for a woman, because it helps to plan her life and control the normal course of internal processes.

Observations of the body

First, let's look at what a calendar and ovulation calculator are. Often these are the days of expected ovulation marked on a monthly calendar. It is often called a calculator because of the need to calculate date data. Typically, an existing menstrual calendar is used for this to make it easier to control cycles. There are also online calculators, the operating principles and actions of which we will discuss below.

To determine ovulation, a calculator and a calendar are our first assistants. When preparing for a happy event, a girl needs to start a calendar in advance in which to color in the first days of her period.

Based on this information, you can make calculations, obtain important indicators and even conclusions regarding the normality of current processes:

• Cycle length. By calculating the number of days between the marked numbers, you can calculate this important indicator. It should be in the range of 25-30 days. For other values, you should consult your gynecologist. Perhaps some problems or disturbances occurred in the body, which affected the length of the cycle. The ideal standard is 28 days.
• Regularity. It is necessary to compare the indicators for different months. Normally they should be equal. A deviation of 1 day is possible. If a failure occurs once (no more than once a year), this does not cause concern if after this the cyclicity returns to normal. With different values ​​in each period, the cycle is considered irregular. This does not always indicate health problems, but getting tested and getting the opinion of your doctor will not hurt. The inconvenience of such a rhythm is the difficulty in detecting ovulation, which is not easy to calculate on a calculator in case of an irregular cycle. This often requires more serious observations and methods.
• Duration of bleeding. Typically, 3-7 days is normal, provided that it does not change monthly. The same degree of shade, density and abundance throughout the day is also considered confirmation of the normality of reproductive function.

Ovulation period calculations

Having preliminary indicators, creating an ovulation and conception calculator and calculating the best moments for it is quite simple. There is a special formula developed by specialists based on observations of the processes of cell generation. To understand where the numbers in the formula come from, you need to understand the phases and their length.

Phases of the menstrual cycle

Each time a woman’s cycle includes three periods:

• Follicular. A follicle forms in the ovary, significantly increasing in growth from 5-9 days after menstruation. A cell is born in it, which, when it reaches a size of 22-24 mm, is considered mature. The time of growth and ripening is different for each and depends on the level of estrogen and the rate of its increase as the cell develops. The average is 11-16 days.
• Ovulation. Having reached the peak of maturity, the cell breaks the walls of the follicle and passes into the fallopian tube. Her path lies towards the uterus and it is advisable for her to meet sperm at this time for fertilization to occur. The phase depends on the lifespan of the cell - 24-36 hours.
• Luteal. It is characterized by the growth of the corpus luteum at the site of rupture of the membrane. It produces a hormone that prepares the uterus to accept an embryo. In the absence of fertilization, the cell dies and the corpus luteum is structurally destroyed. The duration of the period is 14 days.

That is why such an accurate calculation of ovulation and a calculator or a well-designed calendar is necessary - after all, the cell lives only for a day and a delay will lead to the need to expect conception as early as the next month.

So, we found out the length of each period. It can be seen that only the last one is identical for all girls. There are, of course, exceptions when the luteal phase lasts 11 or 12 days, but this phenomenon is very rare.

Formula for calculating the day of ovulation

Therefore, the formula sounds like this: you need to subtract 14 days from the length of the cycle. The resulting indicator indicates the size of the first stage and helps to understand the moment of ovulation. Let's consider an example of a calculation algorithm:

• If a girl’s last bleeding occurred on the 12th, and the normal length corresponds to 29 days, then the calculation is as follows: 29-14=15.
• Now you need to count 15 days from the 12th (the value of the calculated first period). That turns out to be 27.
• The calculator shows the expected day of ovulation on the 27th of the current month.
• It is necessary to plan your sex life taking into account the reserve: every day in the period 25-28.

The margin is required not only to take into account some errors. It is associated with the life of cells. Since a woman lives for 24 hours, fertilization is possible even after she leaves the follicle. And some male cells live up to 3 days, i.e. can function normally for a couple of days until the follicle ruptures and the cell appears in the fallopian tube.

The video talks about the most common and reliable ways to determine ovulation

Irregular cycles - how to confirm ovulation

If a girl’s rhythms are irregular, a mathematical calculation can be carried out according to the following principle:

• Compare cycle values ​​over several months.
• Select the minimum value.
• Take it into account in the formula.

It is clear that in this situation, calculating the days of ovulation on a calculator and drawing up a calendar for several months is problematic. The calculation occurs only for one month, after which you need to confirm it with additional methods or based on your feelings.

The structure of discharge during ovulation

The day the follicle ruptures is best characterized by discharge from the cervix - thick, profuse, viscous. They are compared to egg white due to their external and structural similarity. It is not possible to confuse them with other types of mucus, since they are practically absent from the beginning of menstruation. Let us recall how the structure of mucus changes at different moments:

• Follicular period. The mucus thickens due to the influence of estrogen. It does not appear outwardly, which is why this time is called “dry”. The function of mucus in this phase is to protect the uterus from the effects of microbes, because it forms a kind of “plug.” This also makes it difficult for sperm to advance, since now they are not needed due to the absence of a cell. By the time the bubble matures, the secretions liquefy and slightly leak out.
• Ovulation. A certain hormonal balance is created: estrogen is reduced, progesterone increases, luteinizing hormone splashes out when the follicle ruptures. This changes the discharge to "egg white". This structure is most favorable for the movement of sperm. Even if the ovulation calculator for conception failed, then having noticed such discharge, you can safely diagnose the imminent release of the cell. The period lasts 1-3 days, i.e. both before and after the breakup.
• Luteal phase. The concentration of progesterone increases, the mucus thickens again. It does not differ in abundance and practically remains unnoticed. Before menstruation, there may be slight liquefaction and a watery texture.

Changes in the mammary glands after ovulation

After the cell exits, when progesterone intensifies its effect in order to prepare the uterus for receiving an embryo and the breast for feeding, a slight enlargement of the mammary glands is observed. The breasts may become tender and slightly painful. This will also indicate the presence of a cell in the genital tract.

Tests, measurements and medical procedures to confirm ovulation

Additionally, girls with irregular processes can use tests, rectal temperature measurement (keeping a chart) and be observed with an ultrasound.

The last option is the most reliable in this situation, since the doctor will inform you in advance about the moment of follicle rupture.

Online payments - features and capabilities

Having the calculated indicators at hand, you will need to enter them into the columns of the calculator:

• Last date of menstruation
• Cycle duration
• Number of days of bleeding
• Set months for calculation

As a result, the girl has calendars for the number of months she ordered with the dates already marked: menstruation and expected ovulation. The convenience of the service is undeniable. By saving or printing the result, you can easily control your life and plan important activities for conception. Of course, one should not forget about the error when confirming the marked dates.

If the girl did not make observations, nothing will prevent her from making calculations if she remembers the dates of two menstruation. Having chosen this ovulation calculation, you only need to enter two numbers into the online calculator. Having received the result, you can already conduct analytics and note discrepancies. This way you can identify deviations, re-calculate cycles and make a new calculation based on current data.

Calculating ovulation using an online calculator for irregular cycles

If the cycle is not regular, you need to enter its shortest length. In this situation, you need to be prepared for a large degree of error in the received calendars. Since calculations are not relevant for a girl with a lack of regularity, she should use the basal schedule method, guided by the following rules:

• Take your temperature rectally every morning.
• Mark it as a point on the graph.
• After the period has passed, connect the dots.
• The moment when the curve drops sharply indicates that the moment of follicle rupture is approaching.
• Almost immediately after this, a sharp “peak” occurs, indicating the release of the egg.

Starting next month, the girl will be able to accurately identify these “peaks” and plan sexual intercourse. You need to be prepared that any external factor can affect the temperature. Therefore, it is recommended to take measurements first, without even leaving the bed. When consuming alcohol or taking medications, you need to make a note if the indicators differ in order to understand what caused the change.

This graph can confirm or refute the calculation data of the online ovulation calculator. By the way, you can even see on it the moment of attachment of the embryo to the uterus. But changes in values ​​occur in tenths of a degree, which makes it difficult to recognize the result from the graph.

Calculating the sex of the child by ovulation date using a calculator

Our calculator offers girls an additional opportunity to calculate the sex of the child based on the date of ovulation.

The following numbers are marked on calendars:

• Three days when you are most likely to conceive a daughter.
• Two days are optimal for my son;
• The day of ovulation is the probability of having a son.

These parameters are scientifically substantiated and depend on the characteristics of male cells that affect the sex of the embryo. But it is worth understanding that mathematical data is subject to error and does not take into account some additional factors.

Predicting the baby's gender - what you need to know

If you want to influence the gender of your child, it is better to do the calculation yourself by adjusting the indicators of the online advisor. So, first you need to remember which chromosomes determine the sex of the embryo and their main characteristics:

• XY is a male embryo, obtained by fertilization of a female cell (X) with male cells that are endowed with Y chromosomes.
• XX – female embryo, when fertilized by male X-type cells.

To correctly use an online ovulation calculator to conceive a girl or boy, you need to remember a few simple characteristics inherent in each type of male cell:

• Y: active, fast, mobile. Under equal conditions, X-cells will be much ahead and will reach the goal sooner. They live extremely short lives - up to 24 hours.
• X: do not differ in speed, move through the genital tract slowly. They are distinguished by great vitality - up to 3 days. Sometimes – up to 5 days.

So we know all the information needed to make a forecast. Now it is important to figure out at what point it is better to plan sexual intercourse in order to get the desired effect.

Conception of a boy

Experts recommend that we use an ovulation calculator to conceive a boy, prescribing sexual intercourse precisely at the moment the cell is released, or when it is already in the sexual tract. Let's look at what happens:

• The cell is already in the desired position or is about to approach it.
• Y cells quickly overtake her, leaving X far behind.
• Fertilization occurs.

As you can see, everything is quite simple. We are offered to carry out the act on the day before and immediately after. In the second case, there is no need to refuse the act in order to confirm the result. But it should not be considered the main date, because the female cell may already disappear, since it only lives for 24 hours. If you choose the day before, you need to be clearly sure that the cage will come out. For example, if tests confirm a rupture or specific discharge has already appeared. If there is no indirect evidence, it is not worth the risk, otherwise the Y-cells may not wait for the female one (they live 24 hours, as we remember).

Conception of a girl

To conceive a girl based on the date of ovulation, the online calculator advises us a few days before. Ideally, choose a date 2 days before the expected appearance of the cell and not repeat the acts later. In this case, the following processes occur:

• A day after the act, Y-type cells die. At this time, there is no woman yet, so the conception of a son is excluded.
• A day later, a cell appears in the reproductive tract, where slow X-cells have long since reached and are waiting.
• Fertilization occurs with the predestination of the female gender.

All days that the online forecast offers can be used in this situation. It’s just that you shouldn’t expect a significant effect from earlier acts. Most likely, X-cells will not be able to last that long, because their maximum lifespan, 5 days, is extremely rare.

How to increase the likelihood of gender prediction

The whole difficulty is that you need to very clearly understand when ovulation occurs in order to calculate a favorable day for conceiving a girl using a calculator. Indeed, in this situation, neither tests nor observations will help - they show the day before, but 10-24 hours in advance, and we need a larger reserve of time. Therefore, here it is worth contacting specialists to trace your processes on an ultrasound. 2-3 days before the rupture, the doctor will already know the moment, based on the speed of follicle growth.

You can also use microscope devices that analyze saliva. They are able to show changes in salt crystals the day before and on the day of ovulation. It is enough to follow the crystal patterns for one month every day before ovulation in order to unmistakably understand in the next month which pattern occurs 2 days before it.

conclusions

Knowing how to make a calendar and correctly calculate the moment of cell appearance, you can safely predict the best periods for conception, even having the opportunity to predetermine the sex of your baby. In general, an online ovulation calculator helps you monitor your health by monitoring the timeliness of normal processes.