I haven't had a period since Aug. 13. And before that my last one was in July, but I had an early miscarriage in that situation. Now it's been four months since my last period, and all pregnancy tests have come back negative. Just two nights ago I had pain in the area of my right ovary that felt like a charlie horse. I started birth control Dec. 9th. I don't have medical so I'm trying to see if it is necessary to go in to the doctors. but in the meantime could you tell me what might be wrong?