His family is making me fat!

I swear to God, hanging around hubby's family is making me fat. We've gone out to eat I don't know how many times and I've gained five pounds in two weeks! I'm slamming the breaks on and doubling up the workouts. I do not want to get fat again and I don't want to go over my goal weight at Weight Watchers. I am so disappointed in myself. :-P