Levonorgestrel
"I have had my Skyla IUD for 4 months now. I have no children, The pain to get it inserted was not too bad. After about a month of having it, I would get the worst cramps I have ever got, up to now I haven't got my period. I spot sometimes but other then that I have gained about 15/20 pounds after I got it, I get horrible cramps even though I'm not on my period and I'm always moody. The skyla was not the right choice for me. I'm getting it removed this week. I know I will be relieved."