3 months ago I had unprotected sex in a one night stand..i am married and am stressed over the mistake I made.. Scared of losing my family and passing something on to my wife...i have had frequent urination from time to time, occasional burning when I urinate but not anything that I believe would be out of the ordinary. My biggest symptom right now and over recent weeks is I feel something constantly at the tip of my penis.. Hard to describe but it is not painful just uncomfortable and just feel like something is there or coming out.. I have not had any discharge but sometimes this feeling at the tip feels like I have discharge but when I check, nothing..again no discharge or burning when I urinate but I still feel this at the tip.some type of discomfort... I have been tested numerous times for ghonnorrea, chlamydia, Syphllis and HIV..at 8 and 9 weeks I again tested for these std's along with Hep C and HSV 2..I have also tested for "Trich". I have tested many times and all negative. My primary care physician tested urine and said it was normal.. He says I am fine and basically said I am making up my symptoms. I went home and still felt somethig so I did another round of tests of the same and all negative..I went back to the doctor and he again says I'm fine and to stop testing..he sent me to a urologist to give me some re-assurance.. I've been to urologist now 3 times and my urologist also says I'm fine and does not recommend any further testing..I still feel this feeling at tip of penis... And yes I also took my doctors advise and am currently in therapy..Is this really me producing these symptoms or do I have something that hasn't been checked for like NGU or anything else.. Please help. I am trying to get my life together but this has been a struggle..