when is it normal to have your period
Menstruation is what most people call having your period.. The menstrual cycle is the time from the first day of one period to the first day of the next. A normal menstrual cycle can be as short as 21 days or longer than 35 days. For most women, it lasts 25 - 30 days.But it's common for your cycle to vary from month to month.t means that your body is healthy and normal. Most girls have their first period when they're between 9 and 15 years old. Your period may start around the time it started for other people in your family, like your mom or sisters.