I recently had an incident with a  woman, who let's say is very promiscuous to say the least, where she straddled me with her underwear on but I was totally nude. Now she didn't straddle directly on my genitals but more waist area but there may have been some contact I'm unsure. My penis wasn't very hard and I'm uncircumcised so I don't think the head ever touched her underwear. She also did give me sort of a handjob/rubbing. So my question here is what risk do I have for any and which stds. I know handjobs are generally no risk but I should note I did ejaculate.  I'm more concerned about the straddling part. I'm hoping cause she had underwear on that it puts my risk at zero but want to double check with you. I did ask a AI chat and they said it's low risk but not completely zero and that even if my penis/groin area wasn't in direct contact with her vagina that I could still get HSV or HPV from around the edges of her underwear. Is there truth to that and what would you put my risk at?