Menstruation is a natural process that usually happens monthly in the body of women. During menstruation, the inner lining of the uterus is shed through vaginal canal in the form of blood and other fluids. This process with hormonal changes It starts in the body and usually lasts a few days.

While menstruation can be uncomfortable or even painful for some women, it is an important part of reproductive health. Menstruation is an indicator of fertility and can provide insight into overall health and well-being. Many women use menstrual products such as pads or tampons to manage their periods, but there are also alternatives such as menstrual cups or period underwear.

In general, menstruation is a natural and necessary body function that plays a significant role in women's health and well-being.

Source :

https://medlineplus.gov/menstruation.html#:~:text=Menstruation%2C%20or%20period%2C%20is%20normal,tissue%20from%20inside%20the%20uterus.