There is no risk that can be associated with your event.
HIV can't be transmitted out of the body. Also, somehow the description of your event reflects that you are being anxious, you can't possibly have handful of blood by scratching someone. Oral sex is not a risk.
Below are the only possible routes to HIV transmission in adults:
1. Unprotected vaginal or anal intercourse.
2. Sharing needles intravenously with other drug abusers.
You don't need to test. If you are unable to think rationally, please see a therapist.