I have been on nexplanon for over a year now. I was maybe 145 when I got on it and now I am a solid 182. I am so lost as to why I have gained sooooo much weight. I've never been this big before. My moods change so drasticlly, and everyone probably thinks I'm the meanest girl ever. Lol, I hate this birth control and I am more than likely getting it removed within the next few days!