Hello,
Thank you for your post and welcome to our forum.
Receiving a hand job, even in the presenc of a cut on the penis, does not pose any risk of HIV infection or any other STD. Therefore there was no risk to test you in the first place. In any case as you had a negative p24 antigen test after 4 weeks, that would be considered conclusive and would confirm that you are HIV negative.
Best wishes,
Dr José
Your test for P24 antigen is very reliable after 4 weeks. Not the same case for me. Same situation but fever for more then 3 weeks and rash a week after hand job.