Beyaz birth control causing weight gain?

I've been taking Beyaz for a little over 6 months now, and I've noticed changes in the way my pants fit around my hips/thighs. Also, my stomach seems squishy instead of toned as usual. While it's not a drastic change, I can certainly tell a difference. I haven't actually gained many pounds, probably somewhere between 7-10 lbs. I haven't had any lifestyle changes, so I can't really attribute the weight gain to anything other than the birth control. I want to know if I should stop taking the birth control in order to determine if that truly is the cause of my weight gain? I'm not sexually active, therefore, I don't HAVE to take birth control, however, I did have heavier than normal periods and a painful cyst experience in the past. But, I don't like the idea of this weight gain. I've always had a very constant weight, and it's bothered me seeing the changes in my body that have taken place. What should I do? Does anyone have a similar experience? Help!