i attended a friends party over 2 weeks ago and did something really stupid.i snorted coke with 2 of her friends sharing a rolled up bill/banknote.i only did a few lines but now im terrified i may have contracted hep c through such a stupid,drunken incident.also not sure if this would make a difference but i only placed the bill at my nostril not inside .there was no visible blood as well. i just want to know my potential risk or no risk in this situation.im very scared and will test if need be but please can anyone ease my mind until then?