You know what? I once went to Cold Stone Creamery to buy my daughter some ice cream and I got all excited because they have this "sinless" ice cream in sweet cream flavor with splenda. Usually I am much more careful but thought that I would be ok. Well I was just finishing induction so I was on the 20 carb limit, and after I ate the ice cream I found out that it contained 41 grams of carbs (18 or so were sugar alcohols but I count them as carbs)!!! So instead of having 20 grams of carbs I ended the day with over 50. And you know what? I was still in ketosis the next day.

So, don't beat yourself up over it but try to learn from your mistake. It's one thing to eat the occasional high carb treat when you REALLY want it, but don't even entertain the thought when you aren't that interested and are only doing it out of habit. You will be fine, don't let this little mistake discourage you! Besides, you didn't go over your carb count. You might have done a small disservice to your body, but you won't gain any weight from it either.