Can you tell me if I had an exposure. I had my blood drawn in a hospital where the nurses only do that all day long, it had been open for about 50 minutes that day when I was there, the nurse did not use any disinfectant on her hands but put on my arm, then when it was dry she put her finger on the spot to find the vain and then she put the needle in my arm, where she touched the skin. I was so nervous there that I did not think about it untill I got out of there, but what if she had some blood on her finger from the one before me or a fresh cut? :( should I be worried