Welcome to the forum.
I do not believe you ever had NGU. The main symptom of NGU is urethral discharge, generally with little or no pain on urination. And if indeed NGU explained some of your early symptoms, you have been more than adequately treated for all known causes of NGU. Many people with symptoms like yours are primarily suffering from the chronic pelvic pain syndrome, which overlaps with chronic noninfectious prostatitis; or genitally focused anxiety. I doubt you have anything that will ever harm you or any current or future sex partners. I really wouldn't worry about it; I believe your symptoms will gradually fade with time. I recommend against any further diagnostic testing or treatment.
Regards-- HHH, MD
Thanks for the reply doc. If i do decide to do a full test a few months down the road, what is the recommended test for herpes (I've read there are a few different tests)?
Herpes is not a plausible explanation for continuing symptoms like yours. If you test positive, it will mean you have an asymptomatic HSV infection plus another cause -- whatever it might be -- for your symptoms. But if you insist, just make sure you have a type-specific HSV antibody test. If you're in the US and your doctor or clinic uses either of the two main national laboratories (Quest, Labcorp) then accurate testing will be done. They use HerpeSelect (by Focus labs) and the Captia HSV test (by Trinity Biotech), respectively.