Don't beat yourself up too much. You've lost 14lbs! Come to the UK, we focus on stones as well as pounds, and 14lbs in one whole stone, cause for great celebration, believe me!
All you can do is tie a knot and go on.
I'm sure there is a trigger to your binges but, until you find out what it is, just the very next day get back on programme. Not a punishmently thin version of it, that's bound to fail, just the programme.
Even if you ate enough yesterday to put on a pound, 3500 extra calories, that's 14lbs forward, 1lb back. The odds are still in your favour!