Etonogestrel
"I'm sixteen, and I got this put in May 14th, 2014. For about a week and a half I had no bleeding, but since May 26th I've had constant bleeding. My friend who is on Nexplanon said she bled for two months when she first got it and then had one regular period after that. I have a little more acne than usual but I can deal with it. I haven't gained any weight, in fact I've lost weight. My long period is really putting a damper on my sex life. Also it's summer time and obviously I'm going to want to swim a lot, yet I have to worry about a period as I do so. Overall, the only side affect that's really getting to me is my period, which is mostly heavy right now. I'm hoping it will go away soon because I'm sick of it."