Etonogestrel
"The reviews I read about Implanon seriously freaked me out at first. So much so, that I cancelled my initial consultation. After talking things over with a friend, I decide to just go for it. Long story short, I love this birth control. I don't have to take pills daily anymore and I'm always protected. It's very effective AND I still have monthly periods. My first period was a little long, like 8-9 days, but now they're normal length (3-5 days) and easy. My only complaint would be that while on the pill my cramps virtually disappeared. Since being on Implanon, my cramps have returned however not as strong! I recommend this for all young women like myself-- do yourself the favor."