I'm sure if they wanted to be sticklers they could but I don't think they will. Overall, I get the impression most centers want to be helpful (I know..they get paid for it) but I really think you should just call and set up an appointment with the manager (or a favorite counselor if you have one) and talk about it. You already know the worst case scenario (more $$) but I like to think they will treat you better than that. It's certainly worth a try.
They shouldnt really charge you but you will lose the weeks that you missed so really you are already being charged so go use up the weeks you have left!!! And if you need additional weight loss weeks cross that road when you get there!!!!!!
Britt ~ Life is not about waiting for the storm to pass but learning to dance in the rain!
I've heard some people say that they paid like $49 and got all their weeks back for the time they didn't go in. I think that it would really depend on the center you go to and how helpful they want to be.