I had the Marina IUD in for three years, and it caused me not to have a period at all. In Nov. 2012, I had it removed. Since then I ve had a regular cycle every month that lasted 3-5 days. In March, I didn t have one. I took several pregnancy test and they all showed negative. I finally started bleeding on April 24th. I am still bleeding. So I ve been bleeding a total of 17 days straight. It s not a heavy flow but it s more than spotting (regular flow) and I m heaving very bad stomach and back cramps , accompanied by headaches and fatigue . Is this something I should seek medical attention for, or could it be just my body getting back to normal from the birth control?