Etonogestrel
birth control
"I had my first child at 18 got the Implanon exactly 6 1/2 weeks after having my son. 

I have bled evey day since the day having it put in. I'm not sure if my young age has anything to do with it or not but I'm considering having it removed. But on the plus side it's the only protection we use and I haven't had anything close to a pregnancy scare so it is very effective.."