Levonorgestrel
"I'm 21 with 3 kids, Got my Mirena on 6/12/12 and I'm already on my period. I'm slowly breaking out on my back which never happens and also on my face, I have gained 3lbs, I'm a very active person I workout hard 6 x a week and eat as healthy as possible. Now tell me, is it the Mirena or me?? I'm not sure about this but I'll give it about 5 or 6 months. "