I have had the mirena for over a month now and I have had my period ever since then. It's been horrible! I have cramps that come and go. I called my doctor and he told me that it was normal b/c my body was adjusting to it. BS.And that I need to wait 3 months to determine if they will remove it or not. I think I have gained 5 lbs since I got it. Both my mom and sister had it and they loved it. I'm beginning to regret having this thing.