Levonorgestrel
"I have had my Mirena in for a little over a year. I love having the Mirena in because I'm all about convenience. I don't have to worry about taking a pill, or getting a shot. I LOVE not having a period. I had a not so pleasant experience with the insertion of it. But that doesn't happen often to people. I am on the fence about taking it out. I have gained 21lbs in a year. My acne is bad. I am tired often. Everyone's body is different. I know friends who have not had these problems. I like the Mirena it just isn't a good fit for me."