The problem isn't really the cheating. I wouldn't say it's expected but it's understandable. Are you sure you've been on liquids for 4 weeks. After 2 weeks, my surgeon put me on mushies and told me to progress to solids before my fill. However, each surgeon is different.
The problem may be the CHOICE of cheat and the AMOUNT. Why McDs? Why TWO Big Macs? We have to cognizant of what got us all here in the first place. Next time, pull out of the drive through and think of some alternatives. Even if it's just a Happy Meal, it will be a better choice than two Big Macs.
You should definitely give a call to your dietician and ask for some coping tools and/or healthy alternatives.
Just my two cents, I'm new to this thing as well. I'm craving some fish right now but I'm holding out for a few more days. :scared2: