So the follow-up visit to the urologist was uneventful. He said he sees plenty of cyclists and runners this time of year from dehydration spells during the summer. I road/trail ride about 60-80 miles a week during the summer, and he said that it was a likely contributor. Drink more water every day was the prescription.
Yeah, but my pain was gone the next morning—your's will continue for at least the next 20 years. Congrats.