Hi DonnaJ, Good luck with the call to the vet. Your situation is starting to remind me of what my daughter went through with her dog.
Her dog also had trouble urinating, but she also had trouble with her back legs not working...I think that was a spinal cord problem that developed with age.
Anyway, my daughter's vet would periodically prescribe a limited dose of prednisone,
to suppress the immune system, but there are a lot of potential side effects, so it is not a long-term solution.
Prayers and blessings!