Levonorgestrel
"I had Kyleena inserted about one month ago and it really wasn't bad at all. I'm 19 and have never had kids and insertion just felt like an intense period cramp. It only lasted about one minute. I was crampy for about fifteen minutes after, but was able to be up and go to class the rest of the day. I spotted for two days. My first period included pretty bad cramps and prolonged bleeding, but after that I stopped bleeding, except for occasional spotting. I love this IUD and would definitely recommend it to others. I have my check up on Monday, but so far so good!"