I had a similar pain that lasted for a couple of weeks and I thought it was a UT infection as I had three of them after my biopsy and before the surgery. At my 3 week check up I convinced the URO to test my urine for the UTI and it was negative and stopped a couple of days later, he told me it was all part of the urethra healing process even though I felt it in the end of the shaft like you are.
BTW are you related to Worried Guy in this forum? He is the only other guy I know who weighed his urine leakage and pad use after surgery.
Hope the pain gets better, and my guess is it will.
Terry