I'm so glad I read this thread!!!! I did the same thing yesterday with the Russell Stover Peanut Butter Cups (I ate 2 bags...took me only 5 minutes)....anyways, unfortunately this is not my first time slipping with the lc candy and the 4 lbs. is probably water. I read somewhere on here that the sugar alcohols kind of back up your intestines and force your body to retain water....I don't know, but it makes me feel a lot better that we are not alone!
Jenn