Hi
Personally, having done that myself with the Winning Points WW plan, I wouldn't start messing with next week. Too depressing! I'd just exercise a bit more the next day, be sure I drank my water... and chalk it up to a bad moment.
Low-Point snacks save me most nights from going nutty and finding myself WAY over my Points for the day, heh!
Good luck! Don't freak out, just keep at it...
Sarah