The cause(s) of persistent or recurrent NGU are not well understood. It is either a persistent infection, perhaps due to an organism not even yet identified or discovered; or may be an immunological reaction, i.e. no infection at all. (Personally, I favor the immunological explanation, but the data are not clear.) A third possibility is that it is a physiologic event, i.e. exaggertion of normal urethral mucus production. Finally, perhaps it is possible that you indeed are contributing to the problem by repeatedly massaging the urethra looking for discharge. You can be sure you don't have chlamydia, especially after the treatment you have received.
Most important, there are no known serious health consequences for either affected men or their sex partners: no urethral stricture, no epididymitis, no infertility, no known disease of any kind in partners. You need not take any precautions about transmission, and you can relax about any harm coming. I suggest just living with it. And totally stop milking your penis; since this isn't important or serious, there is no reason to keep looking for discharge.
Good luck-- HHH, MD
You say you can't afford a urologist, but seeing one would be a logical next step. You may be one of the minority who has true prostatitis; or urethritis--can't tell just by description. Some cases respond to even longer courses of antibiotics, 6 weeks or more.
As in my initial response, I don't think any harm is likely to come to you or a partner if you just sit tight. But nevertheless it would be preferable to see a professional to be certain.
Good luck-- HHH, MD
Is it even remotely possible that I have chlamydia after 3 negative tests and all that treatment?
Can having slight hypospadia contribute to this at all?
Can milking the penis increase mucous production?
Thank you for your time and this great service.
No, there is no way you can have chlamydia, unless you acquired it after the last negative test. Hypospadia may increase the risk of non-sexually-acquired urethritis. Milking the penis vigorously and frequently probably can increase mucus production.
HHH, MD