Skyla
"It is extrememly effetive. I'm having mine removed in two days after having it just a few days shy of two years. Insertion hurt like noones business, cramps afterward were the worst I've ever had, and my period before was pretty terrible. My periods were irregular after that, prior to this I had 3-4 day periods at the same time every month. Now I never know when theyre coming, I gained a considerable amount of weight, which Ive gotten under control with diet, as my periods are almost always close to two weeks long. Intercourse more often than not is painful or at least uncomfortable, especially with the onset of my period. Sometimes after climax there are temporary very painful cramps. Its worth it for the most part, sometimes its not."