Etonogestrel
"I've had Implanon for about two weeks, and I don't feel any different than I did before. A few of my friends who got Implanon said that they didn't stop bleeding for six to eight months, so I was a little worried. But I had it implanted in the middle of my period, and the second day after I had it inserted, my period was over. The only thing I can say is don't do anything strenuous with the arm you get it in. I play on a high school softball team, and it's been hurting me because I've refused to not play. So, all in all, the irritation I'm getting every now and then from my Implanon is entirely my fault. But it's great to know that I don't need to remember to take a pill or anything. Worry-free birth control. That's the way to go."