Symptoms for Prostate cancer very similar to my diabetic symptoms. Turning 51 in a few days. Should I request PSA test?

Not symptomatic. as a rule. Occasionally presents with blood in urine. Might notice some slowing down of urinary strew. Quite reasonable to get PSA tested in view of both age & concern. Symptoms most likely those on Diabetic Neuropathy. Your Dr. can order the PSA & perform a digital rectal examination.