I have been having irregular periods for the past 2 months. Last month it lasted almost 3 weeks and this month it still hasn't stopped after a week. It was heavy all throuth my period last month. This month it was heavy at first but now its not even enough to fill a pad in a whole day. I havn.t been under stress so I don't think that's the reason. I went to the doctor but the just put me on birth control to try and straighten them out but its not working. Please help!!