When does menstruation happens?

Answer 1

Menstruation starts at a different time for everybody. A girl can start menstruating between the ages of nine and sixteen - although it is rare to start as early as nine. Once a girl has started her period, it will come once a month for around three to seven days.

At first they can be quite irregular but tend to fall into a pattern as time goes on. There are several factors which can affect the regularity of periods such as pregnancy, extreme weight loss and certain types of Birth Control.

A woman generally has her period for around forty years, but that varies from person to person.

Answer 2

Menstruation typically occurs once a month in girls and women who are not pregnant. It usually starts around puberty and continues until menopause, which usually happens in the late 40s or early 50s. The menstrual cycle is controlled by hormones and involves the shedding of the uterine lining, resulting in bleeding that lasts for a few days.

Answer 3

usually once a month, and it lasts about a week