i was at a restaurant where i squeezed some lemon on my hands. i pulled out a tissue from the tissue box and wiped the palm of my both hands. while wiping i saw red dots on the tissue and which couldnt tell if they were blood stains or red ink. i had a needle scratch on the top of left hand and not in my palm. is it possible i can catch HIV this way, i very much worried and cant sleep !! the incident just happend two days ago.