In December of 2003, I had an unprotected sexual encounter. A week later, irritation within the penis began. I went to a doctor, and was tested for STD's. Chlamydia, Gonorrea, and Syphillis all came back negative. The doctor prescribed an antibiotic, as she felt that it was a non specific urethra infection (NSU) causing the irritation.
I took the medication, and the symptoms were lessened. However, it is almost 5 months later, and I still have occasional interior penile irritation. My question is- what is causing this? Is it possible that the antibiotic did not clear up the infection, and I need to get another prescription? As I've researched this on the web, I've also learned about male yeast infections, and thought that could be possible as well. (especially because I took an antibiotic, which can sometimes lead to a yeast infection). Also, the girl that I had the encounter with has chronic yeast infections.
I have no external symptoms. There is no rash, no bumps, and no blisters in the genital area. The only symptom is irritation that feels like it's "inside" the penis, in the urethra. This irritaion occurs daily, but is not constant. There is no discomfort during urination. What do you feel is the most likely cause of this? Thank you for any help.