I am bi curious male. On a bus travel, I groped a man (mid aged guy) through his zip. I felt his private parts over underwear. There was no skin contact. Few pressing his parts for a minute over underwear. Later, after an hour, I see a minute throne or splinter of about 2 mm pierced in my index finger in the hand I groped. I am not sure when I got that throne or splinter. My question is, what if I got the throne or splinter from the underwear fabric and it had some semen or urine or blood (the guy had urinated just few minutes before the act) which was on the throne or splinter and as groped, it drove through my skin and virus got into my blood stream. Please analyse my scenario and possibility of hiv transmission. I read about needlestick hiv transmission. Is my scenario similar to it? Please let me know what to do next. This happened yesterday.