Hi,
Are there any other symptom like fever,burning micturition or passing cloudy urine ?
The pain can be due to urinary tract infection,some effect might also be played by hyperacidity you are having. I hope there is no active injury or any seen papule on your penis as you did not mention that anywhere.
You can get a urine test for confirmation
Have plenty of water,and avoid spicy food and alcohol. You can also try cranberry juice ...
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