L.M.
I have had Mirena for about 3 years now. When I first got it, I bled heavily for a few months. The bleeding in the first few months was on and off though it seemed like it was more on than off and I thought it was never going to end. I used to joke that how the actual birth control works is by preventing you from having sex in the first place by making you bleed the whole time...lol. Now my monthly periods are very short and light although every other month or so I will have a heavier period than normal but they are still not as heavy as I was before having Mirena and it only last about 3 days. I love Mirena! It is the best birth control that I have tried and I highly recommend it! Hope this helps.