I'm 230 Pounds, I started my Period when i was in grade five. I'm currently 15 years old, and I was off my period for a full year, and then I started in novmber again, i was on lihgtly for a week, and then decmeber, I was on 2 week lightly, and then janurary, i was on for 2 week light, and one week heavy, like normal. my mom asked her doctor about it, she said it's probably where i'm over weight. my frined had the same problem, and she went to the doctor, and the doctor can't do anything tell you get 18. I was talking to one doctor on here, she said birth contorl, and my friend is taking birth control, to SLOW down her period.. because sh's on bad. i was thinking about adking my doctor about birth control. but what will it do? make me come on my period.