Learn how to calculate the menstrual cycle; the simple calculation that can help you escape the unforeseen!
At least once a month, women face a period that can be quite boring for some: menstruation.
Menstruation is the shedding of the inner walls of the uterus when fertilization does not occur. This phenomenon is part of the reproductive cycle. Menstrual flow is made up of blood and uterine tissue. Blood loss occurs due to hormonal stimuli. A woman's reproductive cycle is made up of menstruation, the pre-ovulatory phase, ovulation and the post-ovulatory phase.
In order not to be taken by surprise by menstruation, a good tip is to try to calculate the menstrual period to be prevented. The menstrual cycle occurs every month and has an average duration of 28 days – may vary between 21 and 35 days.
The calculation is simple: the cycle starts on the first day of menstruation and ends on the first day of the next. Start writing down the first and last days of your period. From that, count how many days there was between one period and another and compare to the following month.
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Is important identify if your cycle is regular, if the period between one menstruation and another is always the same length. For this, it is necessary to write down the first day of each menstruation for six months, from the beginning of the flow until the day before the next menstruation.
A woman's fertile period occurs when the egg is waiting for fertilization in the uterus. The process usually occurs in the middle of the menstrual cycle, usually about 12 to 16 days before menstruation. But as each body is a body, this time is not a rule.
In cases of irregular cycles, there is a way to calculate approximately. To do this, just write down the duration of each cycle for a year and then subtract 18 days from the shortest cycle and 11 days from the longest cycle.
For example: among your cycles, the shortest was 20 days and the longest was 29 days, so it is: 20-18=2 and 29-11=18, so your fertile period will be between the 2nd and 18th days of your cycle.
There are several smartphone apps – like Flo, Menstrual Calendar, Clue, Maya, for example –, available for iOS and Android, which do the calculation automatically. These apps are handy when it comes to controlling or checking your cycle and also planning to get pregnant or avoid pregnancy. But remember: every body is a body. And in case you use these apps to avoid pregnancy, know that no method is 100% effective.
