Levonorgestrel
"This is the third day I've had skyla and so far my experience has been excellent. I'd suggest taking ibuprofen all throughout the day and put a heating pad on your stomach (what i did). The procedure was uncomfortable and painful (i cried) but so far, extremely worth it. The day after I got it the bleeding significantly reduced, and today it's hardly bleeding. First day was the worst but definitely doable. As far as being emotional. The first day I was very irritable but I'm assuming it was because I was hurting and hungry all day. Other than that I've been great!"