Dont feel bad, I am on the same boat..been pigging out on junk food. But think about it this way the weight will fall off really quick the first couple of days because of this, causing us to become excited and mroe motivated about sticking to our fast.
Anyways good luck and remember to drink lots and lots of water! btw I think we can lose 20 pounds on these 2 weeks if we really stick to it!!