I had the Mirena iud placed on march 28,2013, it expelled on it's own april 27, 2013. It was encased in a large blood clot the size of a tennis ball. now I have nonestop heavy bleeding, I have gone through 5 pads in a 5 hour period and have passed 11 clots twice the size of fifty cent pieces in 9 hours, the blood is a dark red. i also have discomfort, pain and lighheadedness when the clots pass. I am 22 years old, 5'5 and 190 lbs.