@bobbyjay54321
I know people that have had their prostate cancer come back 20 and 25 years after Treatment. It’s not at all unusual for the PET scan to find nothing. In fact that’s usually what happens with a low PSA..

It took 3 1/2 years before my PSA started rising following a prostatectomy.

If you had surgery as your first treatment, they should be talking to you about having salvage radiation. If you had radiation as your first treatment, then you are not in a position where they need to do anything yet. The standards here in the USA are that you don’t treat somebody with a rising PSA until it hits two points above the lowest it ever hit 2.02 in your case.

Australian may treat it differently, but it is still Something you should treat or should wait to treat.