birth control
"I was on implanon for 3 years and then got Nexplanon inserted 2.5 years ago (they are really the same thing just a different brand)

When I first had implanon, I gained 50 lbs in two months having not changed my eating habits at all, started working out like a maniac and couldn't get rid of any weight. The first three months I was incredibly emotional and depressed, that seemed to mellow down. I developed panic attacks which resolved (mostly) after 6 months. I did not have my period once (yay)
Got my implanon switched out for nexplanon as implanon was expiring. Gained another 50 lbs in 2 months that won't budge. Emotions all over the place but I was more prepared for it. 
Getting it removed early to give my body a break and to lose weight."