I know its the weekend and its hard to immediately get into a qualified vet. If you have some form of anti fungal ointment.. I think athletes foot is safe and vaginal ointments - you can start using that. Now don't take this advice and decide and avoid a vet.. There are many types of fungi and a vet will have to scope it to determine the best course of treatment. It will just help give you a head start for a few days. It will be a hit/miss attempt in all honesty.
I would also check very closely in the folds of scales confirm you do not have a really bad mite infection going on.