I'm a 21 year old male. And I had unprotected sex with a woman and also recieved oral sex from the same woman a week later. I immediately felt something wrong the next day after the following week of her giving me oral sex and noticed discharge from my penis. This occured in March. I went and got a blood test and a urine test to my health advocate and was treated with doxycycline and azithromycin. I was drinking throughout the two weeks I was taking the medicine though. The discharge stopped for a couple of days and then started to appear again in small incriments. I gave it a couple weeks to clear up and the discharge was on and off, just small amounts that were barely noticeable. I went to my health advocate again and took another blood and urine test. Everything came back negative. For HIV, syphilis, chlamydia and gonnerhea. I waited a couple more weeks to let the discharge die down and it still hadn't. Also, I went to another free health clinic in the neighborhood and got blood tested and the physician there took a cotton swab and retrieved some of the discharge and sent it to the lab. I got my results back ad everything came back negative. I'm in disbelief and I have no idea what this could be. I'm thinking maybe a case of NGU, because maybe that can go unnoticed. But it's troubling because I do not want to become infertile and I do not want to continue to have discharge. Also, the discharge is only in the mornings when I wake up and milk my penis. It's always a small amount and sometimes it is a yellowish, greenish color or it may be clear. But it's always a really small amount and never stains my underwear. Please, what direction should I go in to fix this problem.