Levonorgestrel
"I definitely recommend the Mirena as an option for birth control. I decided to get it my senior year in high school because I have goals to achieve and I did not want any babies stopping that. I started off with pills but I realized my lifestyle did not fit that. If you do not want to worry about taking a pill on time EVERYDAY, and worry about the possibilities of you becoming pregnant, get the Mirena. It didn't hurt much and now all I'm doing is spotting. Take this from a teenager, it DOES work."