Levonorgestrel
birth control
"So I had mine put in about a week ago and I had it put in right before I got my other birth control taken out.. the one that looks like a match stick in your arm ( can't spell it right now) and omg did it hurt.. My sister had it and told me it wouldn't hurt but she didn't tell me that it was a lot worse to insert if you haven't had kids
 - which I haven't.. but it was bearable. We got some ibuprofen and I was fine.  I even went shopping after.  I still feel like I've got cramps and my back hurts a little more then usual but other then that it's been going pretty great. All though my nipples hurt but I'm not sure what's going on with that....."