In this case, the tissue and blood which line the uterus aren't needed and they flow out the uterus, through the cervix and vagina and out of the body. One of the most important things for girls to understand is that menstruation is normal and healthy. While blood is a sign of injury or disease in other circumstances, in this case, it's a sign they are growing up. It's also important for girls to realize that they can manage their menstrual flow without disrupting other aspects of their lives such as school athletics and social events. Sanitary pads or tampons are used to absorb the menstrual flow.
Pads stay in place by an adhesive strip that sticks inside the underwear.
A tampon, on the other hand, fits inside the vagina and is held in place by the vaginal walls. The tampon has a string that hangs out of the vagina and it is easily removed by pulling the string. Pads and tampons are available in drugstores and supermarkets and come with instructions on how to use them. Teenagers should not be surprised if their periods vary in how long they last or how far apart they occur. It's normal for young women to have an irregular pattern of menstrual cycles when they first begin menstruation.