Levonorgestrel
"I had skyla put in exactly a year ago. Insertion was a bit painful but only lasted seconds. I was in and out of the doctors within 10-15 min. Procedure was 1 whole minute probably. 3 weeks later I went to the ER because I couldn't stand the pain and I knew something was wrong, found out I had an STI and it was a STI that the doctors were supposed to test for before putting in the IUD. Long story short, once all those were cleared up, the pain was fine. To this day I still have a bit of cramps often but nothing too bad and my periods are much lighter. Overall I am very happy with skyla. If it wasn't for the issues at the beginning, which was the doctors fault, I would rate skyla a 10!"