Hello Alison,

This frogs sounds like it reached you already severely stressed. Since you say it has never eaten I think it more than likely has a lingering septicaemic infection brought on by said stress and is just slowly working its way out of this world. I'm surprised it has lasted this long. Your only course of action at this point is to take it to an amphibian-savvy vet and see if he/she can do something for the frog - I really do believe it's beyond anything you personally could do.

Kurt will have an opinion too but I think he'll say take it to the vet right now.