birth control
"I got Nexplanon bc in July 2015. Which means I've had it for about 3-4 months. I haven't gained weight, but I lost muscle and gained a ton of fat. I didn't notice any spotting until a couple weeks after I got it put in but I haven't stopped spotting and it SUCKS. I'll give it the 6 months it needs but I really don't need/recommend it."