Levonorgestrel
"I just got my Skyla put in (8/2/16) and honestly, it really comes down to how well you can handle pain. I handle pain fairly well and it did cause discomfort as the procedure occurred. My doctor explained it to me in 3 steps. Measuring your uterus, holding your cervix, and insertion, which means only 3 really tough cramps. 



Luckily, I was able to drive myself home right after and haven't felt any kind of discomfort. So far, I'm really loving it and I'd say do your research, ask your physician and if everything's checks out, do it. The pain is well worth it."