The chance of any STI from this event is very low. Even if there had been no condom breakage, you were at small STI risk because of usual skin contact above the condom, and/or contact of skin above the condom with a female partner's vaginal fluids. This is why condoms work less well to protect against skin-to-skin STI transmission (like herpes, HPV and syphilis) than against those infections transmitted by fluids (e.g. HIV, gonorrhea, chlamydia). The additional brief contact you had -- i.e. the parts of your penis that had vaginal/vulvar contact when the condom broke -- did not significantly raise those risks. And the absence of overt penetration also means you were at little or no risk for the fluid-transmitted infections. Another important factor is that most escorts -- by which I mean expensive female sex workers who make appointments (as opposed to brothel workers, bar pick-ups, etc) -- care about their health, have mostly low risk partners, use condoms routinely (as does your partner, apparently), and get tested frequently. So the chance she has an active STI probably is low -- which is reflected in her reassuring text message.

Accordingly, I do not recommend any testing because of this exposure. If you have a regular partner, you can safely continue your usual sexual practices with that person without fear of transmitting any infection. However, if you have escort exposure like this from time to time, you might want to consider routine STI testing once in a while, like once a year. In that case, if you have not been tested recently, you could consider having blood tests for HIV and syphilis and a urine test for gonorrhea and chlamydia. Not because of this particular exposure, but just as a safety precaution advised to all people who are sexually active outside mutually monogamous relationships. (If you test, you can save money by avoiding "comprehensive" test panels that include several infections that are too low risk to worry about.)

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

HHH, MD