You needn't worry about this event. Oral sex is safe sex in general -- zero risk for some STDs, low risk for all, far lower than for vaginal or anal sex. And of all forms of oral sex, cunnilingus is lowest risk of all. The chance of acquiring any oral STD (or any infection at all) from this event is zero for all practial purposes. I recommend against testing for anything. However, if you decide you need testing for its reassurance value, then you can be tested at any time for oral gonorrhea (which requires a doctor visit for a throat swab). The only other STDs you could be tested for are syphilis (blood test in 6 weeks) and herpes (blood test in 3-4 months). But the chance of any of these is extraordinarily low and if I were in your situation I would just forget the whole thing and continue unprotected sex with my wife without worry.

I hope this has helped. Best wishes--  HHH, MD

As for syphillis, I assume you mean that I must wait 6 weeks for testing, but I guess (since my risky encounter was strictly oral on my end) I would ask the same question regarding abstinence from just oral vs any and all. 

I assume I already have herpes (Hsv-1), as I've gotten occasional cold sores all my life. Does this change anything? Actually, in the past hour, my lower lip has begun tingling and swelling slightly, as it typically does before I get a cold sore. But my cold sores are very often triggered by stress and anxiety, which has been my near constant state for 4 days. Still, does this add any further concern or worry?

Thank you again for the reassurance. I know getting tested is ultimately my decision, though it helps to know you feel it would be for reassurance value only and that you do not think it's necessary. I hope these will be my final questions and my last cause for concern.

Syphilis is different. It disseminates body wide, and once infectious, can be transmitted by any sexual contact -- not only contact at the site it was acauired.

Your HSV1 makes no material difference. Your exposure carried a theoretical risk of HSV2, but not HSV1. Your lower lip tingling, if it means anything at all, might be a recurrence of your oral herpes, but is not likely related to the sexual exposure except perhaps psychologically.