I can understand why you felt bad, but I have to agree with Grrovegirl - when people mistake your success for surgery, it means your weight loss is really noticeable, and while they should congratulate you on being so determined and in finding a diet plan that worked, you shouldn't feel too bad that they think you had surgery. What matters is that you're on the right track and you're looking fit enough to have people wondering how you did it. You should be proud of yourself, I sure admire your success!