Hi. So ever since i first got my period they have been very irregular. I am 21 and I can go months without a period then when i do get one they are very very heavy and can last weeks if not months. I have been to the doctors about this twice before. Tested for pcos and thyroid problems both came back normal, and i was put on the pill to give me a period every month. Me and my boyfriend are hoping to start a family in the near future and i just wondered if it was worthwhile going back to the doctors again? Will they be able to do anything to help me be more regular with out birth control or tell me if i am ovulating and fertile? It plays on my mind constantly and i would be devastated if i couldnt have kids.