I deleted your first post, responding to both here. Only a limited number of questions is permitted daily, and duplicates prevent others from asking theirs.
Clearly you have had repeated episodes of urethritis; the initial ones probably were nonchlamydial NGU (based on negative tests for both chlamydia and gonorrhea). I can't tell about whether the more recent episodes were recurrence of the original urethritis or one or more new infections with gonorrhea, chlamydia, or others.
Your joint pain plus conjunctivitis strongly suggests the possibility of Reiter's syndrome, a form of "reactive arthritis" that occurs as the result of an aberrant immune response to several "trigger" infections. Conjunctivitis often is present, and sometimes a particular kind of skin rash. The most common trigger is chlamydia, but other urethral infections like gonorrhea also can do it, as can certain intestinal infections. Although usually not serious in the long run, some cases of Reiter's syndrome can be quite disabling and may involve other comlications.
You need to see a health care provider promptly, one with knowledge about Reiter's syndrome. Either return to your PCP or ask him/her for a referral to a specialist either in rheumatology (arthritis) or infectious diseases. So it soon.
Good luck-- HHH, MD
Thanks a lot. I will go see my PCP ASAP. I also seem to have epididymitis: I have a mild pain in my testicles/scrotum all the time. Do you think that is the case? And can it get serious? Can I become infertile? What are the chances of complications considering it is at least two months since I have had an infection?