I had prostate cancer detected when I was 45 years old. I then had nerve sparing surgery. My Gleason score was 7, but I have not had a detectable psa since then.
After a psa rise they sometimes will recommend radiation after the surgery to the prostate bed. Sometimes they also include the abdominal area. Generally, this is “blind” radiation in that they do not know where the cancer is, but they are making a reasonable guess. They will usually do a bone scan to “prove” that the cancer has not moved to the bone.
Have a discussion with your doctor about the side effects of the radiation. You have already had surgery and that has compromised your erectile function and urinary function to some degree; but offset by your young age which allowed you to bounce back.
Some doctors, using muti-parametic MRI are attempting to identify where the cancer actually is located and radiate just the location of the cancer, whether it is in the prostatic bed or the pelvic area or the lymph nodes. This approach is controversial and not recommended by all doctors.
If radiation is not in the cards, at some point they will recommend hormonal therapy, which comes with its own set of side effects.
You could try the holistic approach and see if it has the result of stabilizing or reducing your psa. I would not wait to long to begin if you wanted to go this route.
Please let us know how you do as that will be instructional and a benefit to the on line community.
Best of luck to you.
Gene