The other day while at the store, the man was cleaning the glass and bitched his finger .. it started to bleed ... He then handed me the bag with those same hands and I proceeded to leave the store. I am a nail biter (bite all day).. And I forgot to wash my hands from that episode .. What are the chances of me catching hiv from this man if he is I fact infected . If I had a little cut in my mouth am I at risk. I don't remebr tasting any blood while biting my fingers but what if his blood was in fact on my hand from touching the bag .. I'm scared . Please help