Etonogestrel
"I've had mine since October of 2013. At first I was super excited because it was a no fuss birth control that would cause me migraines. After I had it implanted I gained 30lbs in a matter of 3 months. Although I believe some of that was stress (I'm in medical school) but I continued to work out regularly and was still gaining weight. I have not had my period since I've had it but instead I've had bloating, mood swings, lowered sex drive oh and my migraines have gotten worse. Although I love how easy it is I feel like it's taken a real toll on my body. I hate to say it, but I miss having my normal body functions, even my period!"