What is my HPV/STD risk?

Doc, this summer I went through a period exploring my bi curious side.  I had a couple of encounters where I would masterbate to two other men having oral sex.  In one incident, one guy my have rubbed my butt cheek for a few seconds or brushed my testicles very very briefly.   In another, a married guy claiming to be clean fingered my anus while I masterbated.  Is there a high risk of catching anything that way?  In either situation, I did not perform or receive oral or anal intercourse.  I'm feeling guilty and am concerned about my risk level for that activity.

[coljac29]

This is not the forum for the doctors to answer, theirs is the expert forum. But from what i have read you are at very little risk of catching anything as if there was no genital to genital contact then it is very very unlikely to caught anything