I am one of the few on the Forum that does not own a single White's, but I can understand your concern. In this case, a picture will really help. Do you have a vet you can take your frog to? It sounds like it might need some extra assistant that only a vet could provide. Sometimes frogs come with parasites that we aren't aware of until they get sick. If they are caught early enough, they can be successfully treated. Best of luck and I hope it all works out.