How to count monthly


Every woman should know when to wait for the arrival of regular menstruation. Thanks to this, she will be able to understand if everything is normal with her reproductive system. In addition, having figured out how to count the cycle of menstruation, you will be able to find out the exact date of their arrival, calculate safe days and avoid excesses.


The first day of menstruation is considered the beginning of the cycle. During this period, the follicular phase begins. Its length, depending on the individual characteristics of the organism, varies from 7 to 22 days. The phase begins from the moment when the uterus is cleared of the endometrium that was formed earlier (during the period of critical days).

Toward the end of menstruation in the pituitary gland is observed intensive production of follicle-stimulating hormone, contributing to the development of follicles in the ovaries. In the process of their growth, estrogens begin to be released, which are necessary for the growth of a new layer of the endometrium.

When the egg matures and the follicle bursts, the ovulation phase begins. The body of a woman in this period is ready for fertilization. The duration of the ovulatory process is from 1 to 3 days.


This phase of the cycle is also called the phase of the corpus luteum. The functioning of this temporary gland lasts about 12 days. Intensive progesterone production occurs.

With successful fertilization, the corpus luteum continues its activity until the endometrium completes the formation of the placenta. If there is no pregnancy, this gland dies off, critical days come. With the appearance of blood discharge begins the countdown of the monthly cycle.

Calculate the cycle

To figure out how to calculate the cycle of menstruation, is quite easy. In this process, a table or a simple calendar will help. You just need to regularly celebrate the first day of menstruation and the last.

Such observations should be carried out for half a year. In this case, the first day of the cycle should be considered the date of the onset of menstruation, and the last - the day before the arrival of the next menstruation.

Next menstruation day

Many women, wondering how to count the cycle of menstruation, mistakenly think that this period captures the gap from the moment of completion of some critical days before the onset of others. In fact, it is not. The first day of menstruation is the beginning of the menstrual cycle. This day should be considered first.

To determine the time of arrival of the next menstruation, it is necessary to mark the start date of the critical days in the calendar for half a year. The obtained data will allow you to understand how to count the monthly. For example, if the cycle duration is 28 days, menstruation began on the 1st day, then the arrival of the next critical days should be expected on the 28th of the same month.

There are several other nuances that must be considered when calculating. Women are often concerned about how to count the cycle during menstruation, if they appear late in the evening. According to the doctors, in this case, the date of their arrival should be postponed to the next day.

Another important point - the abundance of secretions. If the blood begins to only smear, then this date can be considered the beginning of the critical days. The only thing to consider is that with endometriosis such symptoms are observed long before the arrival of the regul. Therefore, it is better to consult with a gynecologist, who will not only take into account all the nuances, but also help to make a menstruation schedule.

Ovulation day

Speaking about how to correctly count the cycle between the monthly and determine the date of ovulation, it should be noted that it is important to take into account the duration of the regulation. In this way it will be possible to understand when the egg cell leaves the follicle and is ready for fertilization.

This date is calculated as follows: first, the middle of the cycle is determined - this will be the date of ovulation (the most favorable day for conception), then it is counted in one and the other direction for another five days.

Thus, with a duration of 28 days, fertilization of the ovum may occur from the 9th to the 19th.

In addition, there are certain symptoms that also signal that the process of ovulation has begun. Among the main ones, the following are distinguished:

  • vaginal discharge becomes abundant and change its texture (viscous, resembling egg white),
  • the sexual attraction is greatly increased,
  • basal temperature rises.

These signs will help to ensure that all calculations have been made correctly and accurately determine the start time of the ovulatory process.

Safe days

The definition of safe days is a calendar method of contraception. Despite the fact that its effectiveness is questionable, many women still trust this method of preventing unwanted pregnancy. According to statistics, the error is about twenty percent.

This method is allowed to be used only if critical days appear strictly in a certain period and the schedule does not go astray for a long time.

To calculate the safe days in which the probability of pregnancy is minimized, you need to take into account data collected for at least half a year. First of all, it is necessary to calculate the average duration of the period and select the most dangerous days in the middle of 10 days. In the remaining numbers the chances of fertilization are small.

Thus, with a cycle time of 28 days from the first day after the menstrual period and up to the ninth, a safe period, starting from the 19th and the 28th, you should also not particularly worry about the possible conception.

According to this principle, an individual table is created for a certain period, but not for long. In the body at any time, a malfunction may occur, and the calculations will already be unreliable.

How to determine the regularity of the cycle

To determine the duration of the menstrual cycle and its regularity, you need to keep a monthly calendar, which marks the first day of menstruation. Thanks to these calculations, it will be possible to determine the dates that are favorable and dangerous for conceiving, and also to reveal serious violations in the body. Regular menstruation is one of the main signs of women's health.

In order to correctly calculate and plot the schedule of regulations, it is necessary to observe the changes in the nature of the secretions, their duration and the date of arrival over the course of six months.

If abundant menstruation is abruptly replaced by blood smears, comes at different times and a change in duration is noted, then serious pathology can be suspected. This requires medical advice.

You can learn your cycle using a calculator in days, following a number of rules. The main thing that is needed for this is to note for a long time from which day menstruation begins.

  1. First example: for the correct calculation, information is taken for each month in order to detect the presence of fluctuations. Thus, if the first regulations began on May 7, and the next came on June 4, then we need to subtract 7 and add 4 from 31 (number of days in May). The result is 28. This is the length of the period.
  2. The second example: calculations are made at fluctuations from 1 to 3 days. In cases where different results were obtained in determining the duration (26, 27, 28 days), the average of the numbers will be considered the duration of the period. In this example, it will be 27.
  3. The third example: the calculations are performed with regular failures. If during the year the same number was noted, and there were fluctuations in one month, then its value is not taken into account. Perhaps these disorders are caused by stress or overwork.

A completely different situation if fluctuations are observed from month to month and are more than two days. In this case, we are talking about irregular menstruation, the duration of which is impossible to calculate.

The arrival of critical days is often a surprise for women. To avoid unpleasant situations, you need to follow the date of their arrival and keep a special calendar. Thus, it will be possible to identify violations in the body and quickly eliminate them.

How to count the duration of the menstrual cycle?

Probably, there is no such woman who would not like surprises? True, there is one surprise, the appearance of which will cloud the mood of even the most optimistic and unfading lady - this is the monthly. Menstruation, the beginning of which took by surprise, can spoil not only the appearance of a woman, but also put her in an awkward position. To prevent this from happening, it is important to know how to count the cycle of menstruation and keep a pad or tampon in an emergency in your purse.

Why count the cycle of menstruation?

Before you begin to consider the duration of the menstrual cycle, you need to know why it is done. So, there are four true reasons that will help a woman to be always on the alert:

  • To eliminate the chances of getting pregnant. Knowing the "dangerous" days will eliminate the likelihood of an unwanted pregnancy and serve as a natural contraceptive.
  • To have a chance to get pregnant. If you correctly calculate the period of ovulation and lead an active sex life at this time, then the chances of conceiving a child will increase.
  • In order to hygiene. As mentioned above, you need to correctly calculate the menstrual cycle, so that critical days do not become an unexpected surprise.
  • To eliminate the likelihood of an emerging health problem. If for a long time the cycle has a pronounced irregularity, then this is enough to consult a gynecologist to determine the reasons for this behavior of the organism.

The duration of the menstrual cycle

The name "monthly" speaks for itself, because the lunar month consists of 28 days, like the average menstrual cycle. But in contrast to the strict regularity of astronomical laws, the female body is individual and chooses for itself the cyclical nature of menstruation.

The normal duration is considered to be within 21-35 days, i.e. 28 ± 7 days.

How to make the correct calculation of the monthly cycle

First you need to decide with what you will keep records. Choose the method that will be convenient for you and will not get lost as soon as possible in a pile of papers. Some people prefer to count in a calendar, notebook, notebook, while others use applications in a computer, tablet and smartphone. The main thing is not to keep all the data in your head, since there is a high probability that something will be mixed up or forgotten.

The menstrual cycle is the gap between the first days of the beginning of the past and present menstrual periods. Noting on the calendar every first day of his discharge, the duration of the menstrual cycle automatically appears. How to count the cycle of menstruation, having only these numbers? If last month the beginning fell on December 5, and the next on January 3, the cycle will be 29 days, i.e., 31-5 + 3 = 29. And so it is calculated every month.

Cycle violation

Calculate the menstrual cycle in advance is not entirely logical and correct, since menstruation tend to be disturbed by several days in the direction of decreasing or increasing. This may be due to several reasons:

  • hormonal imbalance,
  • postpartum recovery and lactation,
  • teenage years,
  • the beginning of menopause
  • recovery of the body after an abortion,
  • climate change,
  • weight change (increase or decrease),
  • problems of the reproductive system
  • medication,
  • diseases and emotional disorders.

Natural causes find a solution over time, and acquired only through examination and treatment.

If there was a one-time failure, you should not “sound the alarm” ahead of time, because to some extent, this is normal, especially when you take into account the conditions of modern life: stress and strain at work, bad habits, fatigue and lack of sleep. Observe the flow of menstruation, their consistency, color and smell. If everything is in order, then calm down and continue to calculate the menstrual cycle.

How to calculate the duration of the menstrual cycle to get pregnant

The most favorable phase for conception is ovulation, the activity of which begins already on the 14th-16th day of the cycle. The mature egg “set off” for fertilization, and for this it has only 1 day, after which it dies off and “expects” the arrival of menstruation. However, it is possible to get pregnant before the onset of ovulation, as the spermatozoa retain their viability and mobility for 2-5 days. To calculate the cycle correctly and determine the most suitable days for conception, you need to use the data on your cycles for the last year. Choose one longest cycle and one shortest. From the short you take away 18, and from the long - 11. For example, here’s the calculation:

34 (long cycle) - 11 days = 23,

25 (short cycle) - 18 = 7.

This means that between the 7th and 23rd day of the menstrual cycle is the most suitable period for conceiving a new life.

PMS syndrome (premenstrual syndrome)

After the period of possible conception, the next phase begins - premenstrual syndrome, popularly known as PMS. You can calculate when the ICP starts, with the help of an accurate menstrual cycle. His appearance notifies the woman of the past conception time and that in about a week there will be a beginning of critical days. PMS is accompanied by unpleasant and painful symptoms caused by "playful" hormones:

  • mammary glands grow in size and become sensitive to touch,
  • there are sharp mood swings, irritability, tearfulness and emotional breakdowns,
  • there are headaches, nausea, swelling, bloating and loss of strength,
  • blood pressure surges are noticed,
  • rashes in the form of acne and acne may appear on the face and chest,
  • the size of the thyroid gland increases.

Consider your menstrual cycle is also necessary to assess the health status of women. If there is a significant delay or critical days come with pain and temperature, this may indicate the beginning of the inflammatory process, endometriosis and other problems that can be determined by the examination and the professional eye of the gynecologist. Therefore, do not be lazy to consider the length of the menstrual cycle, especially since it is very easy and simple.

How to count the monthly cycle

Every girl should be able to count her menstrual cycle. Why is it so important for every woman? Believe me, there are several reasons. And in order to get an idea of ​​why women need to know how to correctly calculate the monthly cycle, we will consider them.

  1. In order to hygiene. That is, so that every girl / woman can be firmly convinced that the abundant bleeding will not catch her unawares at a very inopportune moment and will not put her in an extremely awkward situation.
  2. To plan a pregnancy. Having the correct calculations, any woman will not be difficult to determine the period of ovulation. The chance of a successful conception of the child will increase by an order of magnitude if you increase the activity of sexual activity a couple of days before and a couple of days after ovulation.
  3. And the third reason, no matter how paradoxical it may be, is this: to avoid pregnancy. Here, as you see, everything is just as simple, but just the opposite. Sexual contact on the so-called “dangerous days” should be avoided. Conversely, knowing about when the days unfavorable for conception come will help you and will serve, so to speak, as a natural means of contraception, which is undoubtedly better than any chemical means.
  4. And finally, the last reason is the ability to detect the problem in time and prevent its further development by contacting a specialist.

How to determine the beginning and duration of the monthly cycle

The monthly cycle in women, as you probably know, was not without reason got its name. Only here it means not a calendar month, but a cycle of the moon, which is 28 days.

It is interesting that this is why in many world cultures a woman is associated with the moon.

But in the human body, not everything is subject to the laws of astronomy. The duration of the menstrual cycle with a length of 21-35 days is considered the norm. Everything is easy here: the beginning of the cycle is the first day of menstruation, the end is the last day before the next one.

Now let's talk about such an unpleasant thing as a cycle violation. Most of them are characteristic of young girls whose bodies have not yet been fully formed (in other words, the cycle has not yet been established). The same category includes young mothers, as well as women aged 45-55, going through menopause.

In other cases, stresses, nerves, worries, increased physical exertion, unhealthy diet (in particular - permanent diets that lead to a sharp weight loss, or vice versa - weight gain) can change and influence the menstrual cycle. This also includes such factors as climate change, the use of strong drugs (especially hormonal) and the most dangerous - diseases of the reproductive organs.

That is why a cycle that is too short or abnormally long, and in particular the irregularity of the cycle, should absolutely always cause concern. При малейших проблемах женщина должна обращаться за консультацией к врачу-гинекологу.

Фазы цикла и физиология

Весь месячный цикл делится на три основные фазы. Нам нужно разобраться, что же происходит в женском организме в период каждой из них. В общем-то, весь цикл связан с яйцеклеткой. In the ovary, it matures, and then begins its movement through the fallopian tubes. If fertilization does not occur, then the egg is destroyed and the body gets rid of it. However, let's go in order.

The first phase is menstruation.

The first phase includes the menstruation itself and a few days after. This is the beginning. Usually lasts 3-6 days. It is important to determine the right moment to start. Often, critical days begin with insignificant brownish discharge, but experts in this field agree that the report should be kept from the moment of the appearance of abundant blood discharge.

Second phase - follicular

The middle is the second phase, it is follicular. Covers ovulation and several days before and after it. After the end of menstruation, when an unfertilized egg has left the body, a new one begins to mature in the body. During this period, as, indeed, during the period of menstruation, it is almost impossible to conceive a child.

And when it is possible, it can be said quite concretely - this is the 14th day of the cycle (with a standard cycle of 28 days), when a new, mature egg comes out into the fallopian tube. Ovulation lasts only 2-3 days.

The third phase - luteal

And the last phase is the end. Received the name luteal (secretory or phases of the corpus luteum). This is the period before the next menstrual period, usually lasting about 2 weeks. During this period, the former follicle (corpus luteum) releases steroid hormones, and in the uterus at this time, preparations are under way for implantation of an egg cell, which may be fertilized.

If this does not happen, hormone production stops, the follicle shrinks and leaves the uterus. Just the same at this moment the monthly cycle begins anew.

How to accurately calculate your monthly cycle

Now let's look at the main question - how to calculate the monthly cycle correctly. First you need to track the duration of your cycle in a period of at least six months. From the duration of the shortest cycle, the number 18 should be subtracted. This is the day when ovulation occurs.

From the number of days of the longest menstrual cycle, we subtract and get the day of the end of this period. This method is really effective only if the cycle is sufficiently stable. If there are violations of the cycle, it is better to consult with your doctor on all issues. He will help to restore the cycle.

You can use another method for calculating the monthly cycle. But in this case, you need to accurately determine the ovulation, and then in both directions count down for 5 days. It is really difficult, because, as we noted above, calendar standards work very rarely here.

There are, by the way, indirect signs that may indicate the onset of ovulation. So, for example, both the amount and consistency of the secretions change (the abundance increases, the rigidity increases). In a woman, sexual excitability increases significantly. The body temperature rises.

Symptoms of premenstrual syndrome

Predict when the begin of the month is also not difficult. Symptoms of PMS are extremely simple. They are caused by changes in the hormonal background of the body.

Signs of premenstrual syndrome:

  • the breast swells, its sensitivity is maximized,
  • increases irritability, tearfulness,
  • mood swings appear,
  • Pressure "jumps"
  • feel tired
  • Acne and black spots appear on the skin.

Women's calendar

Now let's talk about how to keep the so-called women's calendar. To record everything or to keep it in memory is certainly a personal matter of every girl or woman, but we note that gynecologists have always recommended that women constantly monitor their menstrual cycle in a pocket calendar, circling the days of menstruation and emphasizing the days of ovulation.

Now, in an age of technical progress, everything is much simpler. You can simply download a special program that, by the start date and duration of your cycle, calculates days favorable for conception and vice versa. In addition, the program will never forget anything, and even forget the alarm, advising to go to the gynecologist if something goes wrong with the female cycle!

Menstrual cycle: understand and calculate

Everyone knows that the menstrual cycle in women is a sign of health. But not everyone understands what is its purpose. You should not take the monthly as some kind of unpleasant anomaly - it is a guarantee of fertility (the ability to conceive). Is not this the highest happiness of a woman?

Simply put, menstruation is a regular bloody discharge from the vagina. But this is only an external sign of menstruation, but there are still a number of changes occurring during this period within the reproductive system (ovaries, uterus, vagina). In general, the body adjusts to conceive. The cerebral cortex and ovaries secrete special hormones that increase the chance of getting pregnant. If the egg is not fertilized, then after a while a new menstrual cycle begins.

Independent calculations

To avoid surprises in the form of an unplanned pregnancy, you need to keep a calendar of the menstrual cycle, where you will mark the beginning and end of critical days. It is necessary to do this in order to reveal a delay or, on the contrary, to choose the most favorable time for conception.

When you decide to keep a calendar, you will not be difficult to calculate the menstrual cycle. For the first day, the day of the onset of menstruation is taken, and the last is considered the day before the next menstruation. You can contact a gynecologist, who is constantly observing you and is familiar with the features of your body, so that he can help you calculate the cycle, having previously marked the beginning of menstruation within a few months in the calendar.

Calculate the safe days of the menstrual cycle using the basal temperature. which is measured in the rectum. It is necessary to carry out the manipulation immediately after waking up, without getting up from bed, in a state of rest. To do this, put a thermometer on the bedside table the day before.

If the temperature in the rectum is not higher than 37 ° C, then the day can be considered safe. If it went down and then rose sharply, this indicates an approaching ovulation. Girls who dream of getting pregnant are encouraged to actively have sex during this period, and those who want to delay motherhood need to be protected very hard. Learn more about how to measure BT →

If you take hormones, the menstrual cycle is more stable, the basal temperature is kept at the same level and there is no sense in measuring it.

Phased separation

Experts identify three phases of the menstrual cycle, over each of which is dominated by its own hormone. This hormone affects the processes accompanying changes in the reproductive system.

The following phases are distinguished:

  1. Follicular
  2. Ovulatory
  3. Phase of the yellow body (luteal).

Start first phase monthly cycle coincides with the beginning of the critical days. At this time, the pituitary gland actively secretes the follicle-stimulating hormone, which provokes an increase in the endometrium. It is also thanks to this hormone that the dominant follicle in the ovaries matures.

5-7 days after the start of the first phase the second . The follicle in the ovary grows even larger, and the amount of estradiol reaches its maximum. Ovulation lasts about three days. It is during this period that the luteinizing hormone is released.

Increased concentration of LH marks the beginning third phase menstrual cycle, which contributes to the release of a mature egg. A broken follicle is transformed into a corpus luteum, resulting in an increase in blood circulation in the endometrium. This is the most suitable moment for conception. In the absence of pregnancy in a couple of weeks, a new cycle begins.

What is considered the norm

To understand how to correctly calculate the cycles of menstruation, you must first clarify what it is. Many women perceive cyclicity as a simple break between critical days, counting from the last day. But the beginning of the menstrual cycle, as mentioned above, is counted from the first day when you started bleeding. The circle closes on the last day before the next month.

This is the duration of the menstrual cycle, which ranges from 28 to 35 days. If you are driving or just about to start keeping a monthly calendar, keep this fact in mind.

What else is characterized by a normal menstrual cycle, in addition to a fixed break:

  1. The discharge of medium intensity is observed for at least 3 and not more than 7 days. If you have this figure is exceeded, it is better to consult a gynecologist.
  2. The ideal duration of the menstrual cycle in a healthy woman is exactly 4 weeks. Sometimes this figure can decrease to three or increase to five weeks. This is not considered a deviation. Too big breaks (from 40 days) come during menopause. Although this may be due to the lack of ovulation and a young woman. It is not necessary to take single cases into account, but if the monthly periods have been reduced to 6–7 cycles per year, it’s time to go to the doctor.
  3. Under normal periods, no more than 60 ml of blood is taken per day. This figure is nearing overestimated, and blood loss in excess of 80 ml per day is fraught with severe anemia and serious abnormalities in the uterus. Deviations are also indicated by very scanty periods (less than 20 ml). Read more about the causes of poor monthly

In a healthy woman, about 16 mg of iron is consumed on critical days. Excess of this norm can be felt in the form of pallor to blue around the lips and wings of the nose, dry skin, general weakness and nausea during menstruation. If you experience these symptoms in yourself, you should contact your gynecologist as soon as possible and follow all of his instructions. Otherwise anemia will develop. In addition, it is the protracted and painful periods that signal endometriosis, which often leads to infertility.

So, cute girls, the mere presence of menstruation is not yet an indicator of health. It is necessary to constantly monitor the cycle, regularly undergo routine examinations at the gynecologist and take preventive measures against common female diseases. Otherwise, the consequences can be most dire, even to cancer and the removal of the uterus.

Keep a calendar, listen to your body, do not diet to the detriment of health and someday become happy moms.