Nexplanon weight gain

Hey guys! How many of you have gained weight on Nexplanon and how much? I've been on it for about 9 months and I've gained 7 or 8 lbs. which looks like a lot on my small, short build. I have been working out less, but I still am working out 2-3 times a week and eat fairly well so I don't know where that weight is coming from.