I have had a mild burning sensation on the tip of my penis and tenderness since two months. Sometimes it comes and goes. I had unprotected sex with my partner three months ago, and it was the first time both were doing this. I have tested for urine culture and sensitivity, but it is normal. I ate antibiotics, but they did not cure it. My partner is fine; she has no issues. I have one small bump on the side of the shaft of the penis. It is painless, with no itching and discharges from the penis. I have tested for diabetes, but it is normal.