All I can think of is calories. How many are you eating daily? I know I used to get caught up in the "I'm eating low carb so I eat as much as I like and lose weight". If you're sedentary like me, you may have to drop below 2000 calories. When I was 300+ pounds and lazy, I was really surprised that my daily calorie expenditure had to be between 1500-2000 in order to lose weight. Especially since I read you need 10x your weight in calories just to maintain your current weight. I hope that helps?