In the beginning your period may be irregular. You could have 1 period and then wait as long as 6 months for the next one. Or, 1 period may last 1day, while the next lasts 10 days. This happens to a lot of girls. Often times it takes a while before a girl's body settles into a regular cycle. In fact, it may take up to 2-3 years. The information being provided does not substitute for medical advice from your doctor or care giver.
Attribution: P&G/Always