Don't feel bad. I splurged a bit as well. But just look at the positive. For me, the positive is that I resisted a some red white and blue frosted cake on the fourth, which is way better than splurging on a few potato chips.
Everybody needs to splurge once in a while. You are entitled! You are in charge! The trick is get get right back on track afterwards! Good luck and have a super healthy week! Claudia