Menstruation (also called “period”) is a normal event of the vagina releasing blood for 5-7 days once every month. You can start as early at the age of 10 and as late at 16. If by this time, you still haven't gotten your period yet, you may want to look into seeing an OB/GYN. These specialists focus on the care of the female body and everything to do with it. Every month, a female's body prepares for pregnancy. The body releases female hormones estrogen and progesterone, including an egg. This egg travels along your Fallopian tubes and waits to make contact with a sperm. A sperm may only appear or come in contact with an egg if you engage in an unprotected sexual activity with a male. This is called fertilization, when a sperm comes in contact with an egg. Although, if the egg isn't fertilized, your hormones will finish off their job for the month and decline. The decline of these hormones will cause the lining  of your womb to shed and this is the action of your uterus becoming thin again, causing blood to come out of your vagina.

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