Hello @gcoley, Welcome to Mayo Clinic Connect. I can understand your concern and concern can be a good thing. Here's some information that may help understand the testing and followup.

Prostrate Cancer Foundation: https://www.pcf.org/about-prostate-cancer/what-is-prostate-cancer/the-psa-test/
Following PSA Levels During and After Prostate Cancer Treatment: https://www.cancer.org/cancer/prostate-cancer/treating/psa-levels-after-treatment.html

You mentioned your family physician didn't seem concerned. Are you able to ask the surgeon who performed the procedure about the rise in the PSA test numbers?