At puberty, that is, between the ages of 10 and 15, the body changes to prepare for adulthood. The girls then discover a cycle that they will experience a good part of their life: the menstrual cycle .
It is a physiological phenomenon where the body changes to allow fertilization and thus to have children. Each month, the ovaries release into the uterus an egg that is waiting to be fertilized by a spermatozoon (brought by the sperm of the man).
But if it does not come, the unfertilized egg disappears and the uterus gets rid of the tissues that were in place (the mucous membranes) to accommodate a new egg. This elimination takes place by the vagina, in the form of bleeding, which generally lasts 3 to 5 days: it is the menstruation (also called period or rules). Then, the uterus will prepare a new mucosa, brand new, to accommodate a new egg.
The rules stop during pregnancy and breastfeeding, and disappear at menopause (usually after 40 years).
Normally, the rules can last from 3 to 7 days. It depends on one woman to another. If they last more than 7 days, the person may have menorrhagia . Then, between each menstruation, it takes about 24 to 30 days, depending on the person.
In any case, if changes (the rules are late, last longer, are more abundant, etc.) arise in the menstrual cycles, it is advisable to consult a gynecologist.
> Discover here how old are the first rules.
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