I made an enormous mistake, as an otherwise totally faithful married man. I was on a business trip and I went for a late night massage while a bit uncharacteristically inebriated. It became fairly clear that the masseuse was going to provide the cliche "happy ending" (hand job), and -- against my better judgment -- I was welcoming of that in that moment. She began doing that for a few minutes and I just laid back and enjoyed it (I would, of course, later regret it -- this brief enjoyment was NOT at all worth it given the guilt and shame I feel).
After a few minutes, suddenly everything felt different. After maybe 10-20 seconds of this somewhat different sensation, I sit up a bit and see that she is actually providing me with oral sex. It's her mouth now, not her hand, on my penis. I fidget a bit to try to get her attention, but after a few seconds I politely but firmly tell her that I'm not interested in that, was only interested in her using her hand. She complied, and we finished the interaction shortly thereafter.
I felt guilty and terrible as soon as I left, but so so so much more in the morning, now sober and mildly hungover.
I've read up as best I can about the risk levels of that encounter, and they seem low -- but not non-existent.
I'm experiencing no CLEAR symptoms (no discharge, no burning feeling, no pain, no itching). I suppose the one thing I've latched onto is I've convinced myself that I feel "discomfort" in my testicles since I see that listed vaguely as a symptom.
I'm going to get a test tomorrow and will await its outcome and the consequences of that.
My question is this: how probable is it to get gonorrhea, chlamydia, or anything else from brief mouth-to-penis contact (on the receiving end)?