i have really irregular periods, i mean i started just before my 14th birthday and i had 2 in a month both for about three days each bout 2 weeks aprt, didn't have any for 8 months and then i had about 5/6 in about three months. i thought they were being to calm down, i had two regular periods then i had a really heavy one, like really heavy that my mum thought i had henraged. its been six months and i haven't had one for all of that time, is this normal???