Birth Control & Weight Gain

I started taking birth control pills three months ago. I used to gain weight in my stomach before anywhere else, but recently all my fat has been going straight to my butt and thighs. My butt's gotten noticeably bigger, my mom and boyfriend commented on it (no way in hell I'm complaining though, I had no ass before 😂). My measurements went from 36-25-32 to 36-23-36, literally four inches in a few months. I haven't changed my diet or exercising habits. I also haven't gained weight (110-115 lbs). Just wondering if anyone else has noticed something like this when taking contraceptive pills, thanks!! 😊