What to do if i got a cut unknowingly and i'm afraid that the thing that gave me a cut may have had blood with hiv or something. can someone help?

Get seen: If you have an acute exposure, you need to discuss with your physician whether to take prophylaxis. The chances of a staple, paper-edge, or even protruding nail having hiv-positive blood on it to make you sick are so low that it's not worth the danger and expense of prophylaxis. If this is an obsessive idea, then talk-therapy will help you discover your inner strengths.