Each month, one of your ovaries releases an egg. The egg goes through the fallopian tube into the uterus.
Each month, the uterus creates a lining of blood and tissue. If the egg is fertilized by a sperm (this is what could happen with unprotected sex), the egg may plant itself into this uterus lining and result in a pregnancy. If the egg is not fertilized, it just passes through the uterus.
The uterus no longer needs the extra blood and tissue. The blood passes through the vagina as your period. The period usually lasts 2 to 7 days and happens about once a month.
Be prepared to get your period.
Talk to your health care provider about when you might start getting your period. Your health care provider may be able to tell you, from other changes in your body, when you should expect your period.
Keep supplies for your period in your backpack or purse. You will want some pads or pantiliners. Being prepared for when you get your period keeps you from being too worried.
Ask your mother, an older female relative, friend, or someone you trust to help you get supplies. Pads come in all different sizes. They have a sticky side so you can stick them on your underwear. Pantiliners are small, thin pads.
Once you have your period, you may want to learn how to use tampons. You insert a tampon into your vagina to catch the blood. The tampon has a string that you use to pull it out.
Have your mother or a trusted female friend teach you how to use tampons. Change tampons every 4 to 8 hours.