Stinging pain in penis. Down there.

Three weeks ago I got this stinging pain in my penis which felt from inside, the pain was not frequent but it does come again. The pain later felt in the right - lower stomach abdomen scrotum and leg, which also sometimes moved to the left. I went to a urologist and he asked me to do a USG kub pvr and urine routine. The report shows a kidney stone 5.6 mm in right mid pole and I had one USG report from March which shows 6.4 mm kidney stone in right mid pole the USG doc told me the pain is not due to kidney stone as it is in the same place from March. Urine report bacteria on the borderline but all normal. The urologist gave me the Themibact 500 and the potrate mb6 course which was completed 2 weeks ago and the doctor told me nothing. I asked him why I was feeling the pain but he didn't reply. Yesterday I felt like a pins and needle sensation inside my penis and scrotum or testicular pain which went away after some time and I feel a mild sensation down there.