About a month ago I drank way too much (beer) and ended up having unprotected sex with a woman. The next day I woke up and had a slight burning in my urethra. There was no discharge or change of color on my penis head, shaft or testicles. I was a bit worried so I went to my GP and she dosed my with Zythromax (a one dose pack) and performed urine tests. The urine tests came back negative. Approximately 3 days later the pain continued so I went to the urgent care and the doctor there performed a swab, gave me another dose of Zythromax and a shot in the rear. He also performed a urine test. All tests came back negative. The pain persists. I went to my GP again and also informed her that I had developed a burning sensation on my anus and felt an uncomfortable feeling between the scrotum and the anus. I was told that everything seemed in order. She swabbed my urethra again and it came back negative. I was given an anti fungal cream for the anal soreness and told that everything was fine. My doctor seems to be getting irritated that I keep coming back with the same problem, but it wont go away. It is a mild pain that only seems to get worse after I ejaculate. Then the urethra feels hot and stings. If I do have an STD I really don't want to pass it on to anyone else. I am going to try to make an appointment with a urologist in the hope that he or she can tell me what I have and treat it. I hope it is not viral. My GP assured me that it wasn't and did not want to perform any blood work to find out. I am loosing my mind with this problem. It has been over a month now and there does not seem to be any stinging anymore. However, it still feels mildly irritated. I have since provided another urine test with negative results for any infection. There is still no discharge or discoloration. I feel like the exterior of my genitals are mildly itchy and uncomfortable. I believe that the anal discomfort is from the two doses of Zythromax. I am not convinced that this is an STD or bad timing for these symptoms to occur. I have an appointment scheduled with a urologist and am hoping they will be able to tell me something. anyone have any ideas? Thanks for your help ahead of time.