When you first start to menstruate, your periods can be very irregular; starting, stopping and starting again. You could have one period and then wait as long as six months for the next one! This isn't unusual. Until your body adjusts to your cycle, your period may be unpredictable, so please don't worry.

Having an irregular cycle is very normal during the first year or two after you start menstruating as it can take up to two years for hormones to settle down enough to make them regular.

I suggest you keep a menstrual calendar and record each period, including your flow pattern. If you are at all concerned, see your Doctor and take the calendar in with you to explain your irregular flow.