Oh my goodness, Tracy, don't be so hard on yourself! You will probably find that after a big carb indulgence, when you go back on the plan, your weight will DROP suddenly! I've seen post after post after post about this. Many many people see a "whoosh" after a slip.

Which is not to say you have license to cheat -- obviously the cheats could become easily become a way of life. But one or two here or there isn't going to hurt you and could even help.