I do this all the time. I am continuously saying "I don't think I've lost any weight" like an idiot. I remember the first time I ate an avocado on this woe (haven't had one in YEARS because of the fat content) and my heart was actually racing. *LOL* I saved a pair of my biggest jeans for when this happens and put them on when I start to panic.

I've found that its just easier to not tell people too much. They know I don't eat bread or starchy vegetables, and that I don't have sugar or most fruits with high sugar content. I just leave it at that. Everyone I know just about does low-fat, low-calorie and I think they would be on their knees praying for me if they went grocery shopping with me and saw all the meat, cheese, nuts, whipping cream, butter, pork rinds, etc... They can't even grasp the fact that I can have "real" dressing on my salads.