Best not to make something out of nothing, if your doctor says you are OK leave it at that, I am 65 this year my PSA was 4.1, after a rectal examination a Urologist told me last year I had only a 5% chance of ever getting Prostate Cancer and my Prostate was in good health.
I don't know what your health circumstances are, but if you are healthy and your doctor thinks so to, and there is no other reason for you to have a biopsy other than the psa result you could wait a while or see if you have an infection. My husband is 51 and back in January had a PSA reading of 7.29. His others have always been below 1
His doctor put him on antibiotics for a month, and said if it didn't go down he should see a urologist. We worried like crazy but prayed for the best result. Just a few days ago after completing the antibiotics he had another test and it went down to 0.5
You could talk to your doctor about this approach maybe.
Take care