If you can be bothered to check how ‘cured’ you are you could put your case details into a nomogram to give you the statistical likelihood of biochemical recurrence (aka The Buggers Back), such as this one from the Memorial Sloan Kettering Hospital in the States:
https://www.mskcc.org/nomograms/prostate
Best of luck anyway, and I hope we both are cured (no inverted commas).
Cheers, John.