Is he drinking and eating?

If he is not drinking a lot, a much less expensive thing might be for the vet to give him sub-q fluids to fill his bladder quickly, and see how he does then. See what your vet says.

I am sure they must have known he could pee okay before they sent him home?

Also - TELL them how scared you are and that you don't have a ton of money. If the one vet is nice, I am sure something can be worked out.


HUGS