Etonogestrel
"I've had implanon for a little over a year. It's been pure hell. I have gained 60 pounds, and NOTHING I do helps me lose weight. My depression is extremely bad from the hormones. (I had depression before, but it's 10x worse). For the first FOUR MONTHS I was bleeding, with a 2-3 day of not bleeding. My periods are now, about 9 days long. I have irregular periods, so it goes from period with 3 weeks off, to period with one week off. It's just all over the place, with extremely painful cramps. I'm getting it removed tomorrow, thank God. I'm terrified of hormonal birth control now, this being my first one that releases hormones. While I have had a horrible experience, I hope that others do not. It might work for you, it might not."