Well I have been on my period for four weeks now. It is a normal to heavy flow. This past week, I have started to pass Golf ball size blood clots. I have passed about 10 so far. I have severe abdominal pain which has sent me to the floor... I went to the hospital and they pretty much said that everything checked out okay, but for some reason, I feel like I need a second opinion... Something was missed, this can't be right!! It hurts so bad and to top things off, I am on birth control to regulate my periods so why am I on my fourth week? If anyone knows what could be a possible answer for this or something I can do to get my period/pain/clotting to stop. PLEASE help!