What is the menstrual cycle and what is its average duration?
In order for a girl to understand how to count the days of the menstrual cycle, you need to first understand what it is.
The menstrual cycle is a period of time from 1 day of started menstruation, to 1 day of the next menstruation. Each woman is different and can last from 23 to 35 days. With its reduction or increase, they speak about the development of pathology.
At each gynecologically healthy woman, the menstrual cycle proceeds in 2 phases. So, if we talk about a normal cycle, which lasts on average 28-32 days, then each phase takes 14-16 days.
Feature of the first phase is that at this time the body is actively preparing for the onset of pregnancy. At the moment of its termination, approximately on 14-16 day, there is an ovulation .
The second phase is characterized by the formation of a yellow body , which in case of pregnancy, contributes to its preservation and normal development of the fetus.
How correctly to independently calculate a menstrual cycle?
Before you start to consider the menstruation cycle, it would be correct to start a diary or notebook.
Before counting the duration of the menstrual cycle, you must correctly determine its beginning. As already mentioned, this is the first day of excreta. Let's consider an example: monthly began 2 numbers, and following them - 30, therefore, the length of the whole cycle is 28 days: 30-2 = 28.
Thus, the first day of the next period should be 31 or 1 day of the month, depending on how many days in a given month.