<s>[INST] i have been having a burning itching feeling at the tip of my penis(just inside my urethra ,. I have been tested for all stds twice,, but the symptoms are still there. I have a very slight white bubble precum then it turns clear. my urologist says its in my head, but the discomfort and pain is real. it happens everytime i ejaculate and last for a day or 2. [/INST] Hello,The history and symptoms are suggesting me that you may be having fungal infection. The fungus is the normal comedians of the genitals which is kept under control by the helpful bacteria, whenever there is an imbalance between them, it will lead to multiplication of fungus and the produces the symptoms which you are having. The fungus tends to survive for longer period of time in a wet area. So you can be having fungal infection and I would suggest you to follow1. Topical Antifungal cream2. Keep the area Chat Doctor.  </s>