How long should my period last?
First, remember that every girl’s body develops at its own pace and reacts in its own way. Menstruation, also called periods, generally starts anywhere from age 9 to 16. So, if you haven’t gotten your period yet, don’t worry. You will get your period every month, or every 24 to 35 days (start counting on the first day of your last period). At first, the timing probably won’t be exact, or “regular,” and that’s normal. Give your body time to develop. Your period should last from 3 to 6 days, maybe longer at first. Sometimes it will be heavy, other times light.