Weight Gain on Implanon/Nexplanon?

My first method of BC was the implant in my early 20’s. The only side effect I had was long periods. I ended up switching over to the pill, but I wasn’t consistent with taking it. I got the implant inserted again in November 2022 and I’ve been gaining weight like crazy. At first, I thought I had unhealthy habits. But I’ve been working out consistently, eating well, limiting my drinking. Has anyone else had this issue? And if you did, did you lose weight when you got it removed?