I was just in for a haircut and I heard the woman go "ouch", but didn't think anything of it. When she was checking me out, she had grabbed a tissue because she had cut herself. I am worried about the chance of transmission from when she apparently was bleeding and kept cutting my hair. She handed me her comb and had me use it after she was done, and I can only assume there was blood on it. I am sick to my stomach with worry. Is there a chance I contracted something if I had a wound I didn't know about on my scalp?