The only risks for HIV in adults are:
1) Having unprotected anal or vaginal sex, or
2) sharing intravenous needles with IV drug users.
You cannot get HIV or any STD through hands or fingers - not yours, not anybody else's - EVEN IF those hands/fingers get blood or fluid on them and EVEN IF they have cuts or scrapes.
If you do not engage in any of the activities I mentioned above with someone HIV+ or whose HIV status is unknown to you, you will NEVER have to worry about getting HIV. There is no information you could add about this event that would make it a risk for HIV.
Transmission via wounds would only occur in a traumatic injury situation, where both parties have open wounds that are actively bleeding and need medical attention. This would never occur in a sexual situation - only in the case of severe injury. Any wound that does not require immediate medical attention is of no concern.