Most periods last 3-5 days, but they may be as short as 1 day, or last as long as 7 days. Most of the flow occurs on the 2nd or 3d day and then gets lighter. Sometimes it stops and starts for several days until it's over. This is about 10-15 saturated pads or tampons per period. It can be normal to use up to 24.
Many girls have pain during their period.
No, but medicine may help. Good nutrition, exercise, and a heating pad or hot water bottle on your abdomen may help. If your cramps don't get better, ask your health care provider about other ways to treat them. PMS or premenstrual syndrome, is a group of feelings or physical changes that some women have about a week before a period. Keep track of your periods.