I am 25 years old. I have no Children Nor have I ever been pregnant. For the past year I have have had seriously abnormal menstruation. It started in Late July in 2011 and it is Now September 2012. My period last for about an average 17 days a month. I have been on 3 different Birth Controls to help, And nothing. My period is really heavy like in one hour I go through a super plus plus tampon and a pad. I have severe cramps during these 17 days , and I pass blood clots the size of a large sharpie marker in length and thickness. The color ranges from bright red to sometimes a little darker pink ,but it always look fresh. One Dr. told me I have poly cystic ovaries. One doctor told me I had a bladder infection and one told me I just bleed abnormally. I am feed up with not knowing what is wrong and being in pain so often. I also want to know is this going to affect my child bearing? Please Help me..!