Levonorgestrel
"I did a lot of research before getting my skyla put in & I felt as if I was making a great choice although I was very scared of the insertion due to reading reviews. It actually wasn't that bad. The pinch of my cervix was the least painful thing. The dilation of my cervix is what hurt the most! The procedure only took about 3 minutes. The only problem I had was that my strings were way too long but my doctor fixed that. I had my first period about three days after insertion & it was a bit heavy & cramps. After about 5 days I had no more bleeding until the next months period. It was a lot lighter than normal. Hopefully by my next period I will have nothing at all. I recommend this BC! I do not regret my decision."