Will See My Urologist Tomorrow For 6 Mo. Follow-up. Radical

Will see my urologist tomorrow for 6 mo. follow-up. Radical prostate removal 7 yrs. ago on Aug. 12th. Readings have been .02 just following surgery, up to .03 the next 6 mos. and basically stayed at .05 until one yr. ago when it was .07 and this time (tomorrow) it is .11. What to expect? What to ask? Health has been excellent throughout. Am 75 yrs. old.