Levonorgestrel
"I've had the Kyleena for about 4 months. The insertion was virtually painless, as the doctor put numbing cream on me. Of course I had cramps afterwards but they went away after a week or so. My periods have been very irregular. When I get my period, I continue to spot for weeks. I'm hoping this will subside. I've also experienced acne problems which is something I've never had a problem with before. I'm getting acne on my face, back and chest. The string on my Kyleena has also recoiled. The doctor confirmed that it is still in place, but I can no longer feel the strings which worries me sometimes. I would recommend kyleena for birth control because it works. There are some side effects but I think they are worth it in the end."