Dear Experts 
So following up from my previous question I want to ask a few more things. 
1. Would the fact that I was on the massage table pose any risk for getting an STD. For example, if the massage table was not cleaned properly and I'm pretty sure it wasn't cleaned. For example, if there was the bacteria/virus on the massage table and then I sat on the table naked, would it be possible for me to get HPV.
2. From this oral sex encounter, I read that getting NGU was a possibility? So after this encounter, a part of my foreskin did appear redder and more painful when I touched it. Also I would say 1-2 months after this encounter, I started experiencing a dull feeling in my testicle. This pain is gone now but I had it for like a few weeks. I also had a nerve pain down both of my legs and both my legs feel quite cold however, this is not a constant feeling. It occurs on and off. I sometimes don't have it during the morning and then it occurs at night. I did not have burning urination but I also had some itchiness on my glands which lasted like a few weeks and then went away and  then sometimes comes back. Also sometimes when I get an erection, one of my feet hurts. I went to a urologist who thinks I have prostatis but he did not do a prostate digital test. It has been 2 years since this encounter and I still get symptoms to this day. I got tested for all STDS and it was negative but I'm not sure if I got tested for NGU. so my questions regarding this are 
3. Do my symptoms sounds at all like NGU? I am scared that I am an outlier and NGU was the cause of my prostatitis. 
4. Is there any way to test for NGU? I think the best solution would be for me to go get tested for everything that I can get from oral. What should I ask to be tested for? 
5. I have taken antibiotics a lot of times since this encounter(not for STDS though but for other things such as an eye/ear infection etc). For example, I have taken doxycycline 100mg for 28 days in a row once a day.

1) Nobody ever gets any STI from lying on a massage table or bed, or from any other environmental exposure. 

2-7) Yes, NGU can be acquired by oral sex, but orally acquired cases are is believed to be harmless, due to entirely normal oral bacteria -- a trivial, non-worrisome condition. In any case, your symptoms are not at all suggestive of urethritis of any kind. They sound entirely emotional in origin -- your anxieties making you more aware of trivial symptoms or even normal body sensations that you otherwise would ignore or not even notice. Further, NGU would clear up on its own within few weeks: you cannot still have NGU from an exposure two years earlier. There is no lab test for NGU. And if somehow you had it, those antibiotics would have cured it -- and yes, NGU from oral sex probably always clears up on its own, without treatment.

8) No other STI is likely from the oral sex event 2 years ago. But if you haven't been tested for STIs in the meantime and would like the reassurance of negative test results, you could have a urine test for gonorrhea and blood tests for HIV and syphilis. If you choose to be tested, you can count on negative results.

NGU and NSU are just different terminology for the exact same condition.

The pains you describe are not possibly due to any STI. As for the other symptoms mentioned above, I strongly suspect an emotional origin.

It's time for you to move on and stop obsessing about a non-risky sexual event that you obviously regret. You have no infection of any kind from it. If you continue to worry despite the reasoned, science based reassurance you have now had (probably from your own doctor[s] in addition to this forum), you should consider professional counseling. Your worries are completely irrational. Also I strongly suggest you stop any and all internet searching about all this. Like most anxious persons, you are being drawn to information that inflames your anxieties. It isn't worth it.

HHH, MD

2) No. You cannot get these STDs by fingering or the rectum or anywhere else. Nobody has ever been known to transfer any infection from their own penis to their rectum.

That concludes this thread. Repeated questions on the same topic are not permitted; this being your second, it will have to be your last on these issues. Such excess questions are at risk for being deleted without reply (and without refund of the posting fee). I do hope both discussions have been helpful. Best wishes.