Levonorgestrel
"I was really frightened to get Mirena after reading some of the awful reviews. However, it has been a good experience so far. I have had it for about a week. I was told about the spotting and I have only had a little one day. I had absolutely no stomach cramping after a couple of hours after it was put in, but you must take about 5 Aleve before and after. The worst part was when they put it in. It wasn't bad until they dilated my cervix, and let me say, if that's what childbirth feels like, I'm scared. That lasted for about 45 seconds and then was over. Overall, I've had a pretty good experience. Everyone is different, but I am amazed at how little side effects I've had."