Etonogestrel
"I got the nexplanon implanted a few months after I had my baby (2 years ago)..I loved it at first. I had zero side effects. My periods were normal. And I didn't have to remember to take it every day. I do not recommend this  but I did have sex without a condom or the POM with my fiance  all the time and never got pregnant. 
But now, two years into it and I'm starting to break out like crazy. And my periods last 2 months with only a day break in the middle. It's getting out of hand. So I think Im going to stick it out for the last year and then get on the pill. Unless it gets much worse before the last year is up"