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Women who have a regular menstrual cycle, meaning they always have the same duration, are able to calculate their menstrual period and know when the next menstruation will come down.
If this is your case, enter the data into our online calculator and find out what days your next period will be:
What is the menstrual period?
The menstrual period represents the number of days from which the menstruation goes down until it disappears completely, which usually lasts for approximately 5 days, but which can vary from one woman to another. Normally, menstruation starts around the 14th day of each cycle.
Better understand how the menstrual cycle works and when menstruation starts.
What is the purpose of knowing the day of menstruation?
Knowing which day the next menstruation will be is useful for the woman to have time to prepare for this moment, since she may need to adjust her daily life, in addition to helping to schedule gynecological exams such as the pap smear, which should be done outside the menstrual period.
Knowing when your next period will also help to prevent unwanted pregnancies, as this is considered the least fertile period for women, especially in women with a regular cycle.
What if I don't know when my last period started?
Unfortunately there is no way to calculate the menstrual period without knowing the date of the last menstruation. For this reason, we recommend that the woman take note of the day of her next menstruation, so that, from there, she can calculate her next periods.
Does the calculator work for irregular cycles?
Women who have an irregular cycle have a harder time knowing when their menstrual period will be. This is because each cycle has a different duration, which means that the day of menstruation does not always happen with the same regularity.
Since the calculator works based on the regularity of the cycle, it is very likely that the calculation of the next menstrual period is wrong for women with irregular cycle.
Check out another calculator that can help in case of irregular cycle.
Created by: Tua Saúde Editorial Team