I have had the Mirena IUD for 3 1/2 years with no problems, until recently. I started bleeding about two months ago and haven't stopped. I thought it was my period and have been waiting for it to stop. I typically have spotting every month for about 3-4 days (on schedule) but about every 6 months I get a fairly heavy one lasting about 5-7 days (like my usual ones before I got Mirena). But this bleeding keeps getting heavier and heavier and is JUST bright red blood. No tissue or clotting, just bright blood. I'm worried! It's been 2 months! I have an appointment monday but I want to know if this happens sometimes or if something really bad could possibly be happening to me. Thank you.