I've been having, how do i say 'irregular' periods since i was 13 [i'm 16 now] so i was put on the birth control, eventually my periods just ran together, no let up, constant heavy bleeding with blood clots and cramps. My doctor switched birth controls twice and it never helps. I went to a GYN who referred me to a Hematologist, who has tested me for Hemophilia, von Willebrand Disorder and other clotting disorders. NOTHING, they can't find anything wrong, i'm not even anemic. The constant bleeding has been for 2 or so years, regardless if i was on the pill or not. I'm looking for help.... If you any advice that'd be very appreciated.