So I've gone to countless doctors and they've all sworn you cannot gain weight due to a IUD. I've gained close to 35 lbs since I've had mine inserted (1year ago) and this is the first time I've ever had to worry about my weight. No diet or lifestyle change. I'm so terrified to get on the pill due to weight gain, acne, and well it not being as effective as an IUD. Any one else experience weight gain with an IUD?