Hi. I am male, 31 years old. 

I recently had a sexual exposure with a woman. We did not have vaginal/anal sex or oral sex. 

She did give me a handjob and I rubbed my penis on her buttcrack (frottage). My penis and head of my penis may have touched her anus. I did not touch her vagina with my penis. I did rub her vagina with my hand and then masturbated myself. 

Do I have a risk for STIs? Should I be tested? Can I have sex with my regular partner without fear of infecting her?  I am particularly concerned with HSV. 

Thanks for your time. 
Greg.

I should also mention that the women involved was a commercial sex worker. We had a discussion about STIs and she told me she does not do sex or oral sex without a condom and has a partner, so she needs to be careful of risk. She seemed as worried as I was when I mentioned STIs. Regardless, I'm still quite concerned. Is this encounter something I should forget and move on with my life? Thanks doctors!

Welcome to our forum. Irrespective of your partners risk and irrespective of whether she was infected or not, the sorts exposures you describe (frottage, masturbation) have never been associated with with risk for acquisition of any STI, including HIV.   There is no need for concern and no need for testing of any sort.   Likewise there is no reason for you to abstain from unprotected sex with your regular partner. I urge you to make every effort to move on without concern.  EWH---

Thank you, Dr Hook for your prompt reply. I am a huge fan of the work you do and what you had done for Medhelp. 

Hi Dr Hook. 

While there may be a tiny theoretical risk for acquiring HSV  from the sort of exposure you describe, I have never seen or heard of anyone who acquired HSV in that way..  I would not worry and unless you develop sores or lesions I certainly would not test. I urge you not to worry and to move forward without concern.---