Etonogestrel
"I've had Nexplanon for about 4 months now. The first few months were great, no bad side effects and I didn't get my period at all. Then this month I started spotting (about 12 days ago) and it hasn't stopped yet. It's actually gotten heavier like a normal period and I'm having a lot of cramping. My skin has gotten a lot worse in the last month when it was pretty clear before. I have also lost weight and my appetite has decreased, not sure if it's from the birth control but I think it could be. I'm going to wait a few more months to see if these side effects continue/get worse before deciding whether or not to go back to the pill. At least it is effective as a birth control, as I haven't gotten pregnant."