If you never heard of a PSMA Pet scan, get outta Dodge and rent a room for a week near a GOOD medical center. Get tested and re-evaluated so you know what is REALLY going on - this is your LIFE here you’re talking about and ‘convenience’ cannot be a factor.
I drive over an hour in heavy traffic to get treatment - when I could have walked to the place near my home. True, you are a much greater distance than I am but you will not regret it.
However, you WILL regret not receiving the best care possible.