I had my surgery 7 weeks ago and I have lost 20 pounds but it seemed like a struggle to lose that much. I lost 67 on my own before my surgery & I was happy with what I was seeing on the scale but since the surgery I will lose 2 pounds one day then maybe 1 pound two days later, after that I might go a whole week and no weight lose. I try to exercise 5-6 days a week. I walk, ride the bike, elliptical & some weight training. I try to watch my calorie & carb intake & I don't eat more than 800 calories. Why I don't have the big weight loss like others?