Yes, I would be looking at a Gallium 68 PET-PSMA scan (more accurate than a cheaper Choline scan) soon, but you would have to travel to get one, as only a few places offer it. That’s so Dan Dare the radiologist knows where to aim his ray-gun.
Even then it might not pick up anything. You might start on hormone tablets and see how your PSA is in a few months time.
Best of luck.
Cheers, John.