Okay, very late here with the reply, and getting real for a sec:
Things probably went back to normal a few days later, right?
This same thing happened to me, twice (out of about 8 experiences at a PS). I only go to PS, no FS places, unprotected oral.
I too felt this same thing. Nothing hurts, no obvious STD, no discoloration, no spots, no discharge, but something felt... weird. Pressure on the prostate or something. Hard to explain, but if you experience it the first thought is "Oh fuck, what is this? Better get to the clinic..." (and everything comes back negative).
I spent a bit researching it on the internet, there are tons of forums where guys post the symptoms but no clear cause. A lot of guys who had some sort of unprotected oral experience (usually DT, from girlfriend, friend, aquaintence, lover, Craigslist hookup, provider etc); but in one such thread, buried deep, I found the answer:
It's basically a slight bacterial infection caused by mouth bacteria from DT during unprotected oral (basically if someone is using a lot of spit, a little backwashed down the urethra into the prostate). It happened to me twice, from a provider at Jan Jan who was really good at DT, and used a lot of spit.
A day or so later, I felt a little pressure down there, a "weirdness/pressure" (not "pain") when peeing for a few days. And right at the point where I start freaking out, getting tested (neg) etc, it goes away.
Basically the prostate is pretty unprotected, and sucks up all bacteria that gets near it. It's really prone to infection/irritation. But it usually works itself out quickly, and medical intervention is not required (if you're looking for Something, grab cranberry juice and chug it for a day or two, that helps). On top of that, there are no other short term or long term effects of an infected prostate (prostate cancer etc). It's basically "your prostate got a sore throat".
Now of course do not take this as medical advice, and if you are showing symptoms of anything like pain, discharge, discoloration, go to the fucking doctor.
But the symptoms you list are common, but worrying the first time you get it, and it's not documented well on any site (that is, prostate infection is very well documented, but not the connection to getting a bacteria or two from uncovered oral/DT, because the first place we jump of course is "STD").
Hope that helps. Again, this is just an explanation of some certain symptoms, and not anything resembling real medical advice. Please don't ask me in public or private (for you future readers) if your X seems like this bacterial infection, I won't reply; my official answer is "go to the doctor, get tested, be safe".
