Hello. about 3 weeks ago I had a sexual encounter with a woman. I wore a condom but at one point she took it off to apply a lubricant and began to "massage" my penis with her bare hand. About a week or so later I started experiencing a burning sensation on the tip of my penis. I never developed any kind of discharge or bleeding or anything like that, just burning. I am not experiencing penile pain either. It just burns especially when I am seated. I went to a doctor in my town and he told me that I had an infection although he was a general practitioner and never actually examined me. He gave me a prescription for ciprofloxacin (500 mg) and a diuretic. I have been taking both for about a week now and have been feeling better but the burning is still there.

Given the information I have provided, what do you think the chances are that I could have contracted HIV?