Hey I am a 23 year old male and have a coccaine problem (snorting) I have been sharing dollar bills to snort the coke with this girl who I know is negative. I am freaking out....all of a sudden i woke up with these 2 huge bruises on my arm that came out of nowhere. My question is this a symptom of HIV? Should i be worried about the bruises since i am a coke snorter. Please someone tell me.