My main reaction is to congatulate you for the wisdom in using a condom for this event. That fact is by far the most important aspect of this even. Intact condoms are highly effective against those STDs transmitted primarily by fluids (gonorrhea, chlamydia, HIV, hepatitis viruses). Although somewhat less effective for those transmitted skin to skin (HSV, HPV, syphilis), they're still very good and the risk of catching any STD from a single event like this is very, very low.

Almost all sexual events have a certain amount of ancillary contact, like hand-genital contact, fingering, kissing, etc. These carry no measurable risk of any infection. There has never been a reported case of HIV in someone whose only risk was fingering or other hand gential contact. And if you think of it, there must have been billions and billions of such events -- and because nicks and cuts on the fingers are extermely common as well, there must have been billions of fingering events, with cuts, with HIV infected women. And still no known cases of HIV transmission.

So for sure you do not need testing and can safely continue sex with your regular partner. That said, if you have non-marital sex with CSWs on a regular basis, you should be tested for HIV and common STDs (gonorrhea, chlamydia, syphilis) from time to time (e.g. once a year), even if there have been no lapses in safe sex. If this describes your lifestyle and you haven't been tested recently, this would be a good time, while it's on your mind. But definitely not because of this particular event.

I hope these comments are helpful. Let me know if anything isn't clear.

HHH, MD