Knowing your cycle is very important, and not only for those who want to become pregnant. This is useful for determining "dangerous" and "safe" days, as well as for diagnosing various malfunctions and disorders in the work of the female reproductive system.
How correctly to calculate the duration of the menstrual cycle?
So, first, let's define what the length (duration) of the cycle is. In fact, this is the number of days between two menstruations.
In order to better understand how to calculate the length of the menstrual cycle, consider this example. If the previous menstruation started, say, on October 28, and the next time the menstruation came on November 26, then your cycle is 30 days. In this case, the first day of this cycle is the date 28.10, and the last day is 25.11, because 26.11 is already the beginning of the next cycle.
It should be borne in mind that the duration of the bleeding itself does not affect the calculation of the length of the cycle. It does not matter, the duration of the monthly 3 days, 5 or 7 - the scheme of how to calculate the menstrual cycle, still remains the same.
Also often women have a question, how to be, if the monthly came late in the evening - to refer this event to the current day or to the next. It is widely recognized among gynecologists that in such a situation the first day of the cycle should be considered the next calendar day.
If you should see a doctor, for example, on the third day after the arrival of menstruation, you should not neglect it. And to calculate this date is very simple, being guided by the scheme described above. In this example, this day will be October 30 - the third day after the actual onset of menstruation.
As for the average duration of the menstrual cycle, as is known, such a concept also exists - you can calculate it by adding the sum of several cycles and dividing it by their number.