Your chlamydia and gonorrhea tests are conclusive.
You had no risk for HIV and any of the hep viruses.
You can retest for syphilis, but assuming you're in the US, or another developed country, I probably wouldn't bother unless you get a sore. It's uncommon.
Depending on how much grinding there was, you probably weren't at risk for hsv2. There needs to be direct, unclothed, genital to genital (or anal) contact, with a lot of grinding - the kind usually associated with intercourse to transmit.
The hsv1 IgG test misses 30% of infections. Since 50% of all people under 50 in the US have oral hsv1, and the number gets higher as you get older, you may have that already (even if you haven't had symptoms ever - most never get symptoms), which means you are extremely unlikely of getting it again genitally.
Even if you don't have it orally, if you don't get sores, I wouldn't worry about it. If you decide to test for it again, only test for hsv1. The hsv2 IgG has a fair number of false positives, and you weren't likely at risk for that.
My guess is that your intermittent ache is anxiety and a hyper awareness of the area.
I understand that you feel horrible about this, but remember that guilt doesn't equal risk.