Levonorgestrel
"So I have had skyla in since august 16th 2016. I had to get my last one replaced because I didn't take to it the first one I had my period lasted 2 months it was heavy and gross. My second one now has stopped I have had my period steady since august.. it's now nov 24 and I don't know what to do.. sometimes it's super heavy or sometimes it's light but still very much so there. Random and painful cramping. This birth control is depressing but it's a good birth control mainly because you can't have sex because your on your period (unless your into that). Getting it taken out was not horrible, getting my second one back in wasn't bad just made me sick.Over all I hate this birth control to be honest no woman likes bleeding for more then a week"