"i have had the mirena for 3 weeks now and i hate it. i am 27, no kids and the insertion was so painful. they didn&#039;t even give me a heads up or anything. for 10 minutes i couldn&#039;t even get up off the exam table. i was finally able to hobble home and the pain was so excruciating all i could do was bawl for 6 hours after. for the first 2 days the pain remained. ever since then i have periodic cramping throughout the day. some of the cramps are mild and some make me double over. i would guess3-4 cramps every hour that last about 30 seconds each. at first the bleeding was like normal menstrual blood, then it was non-existent, and now its bright red. every time i cramp i expel a puddle of blood and it even pools in the toilet when i pee."