Hi there.
Oral sex carries no risk of HIV, there is not one solidly proven case globally.
I doubt you would find anywhere that would prescribe pep based on the above.
HIV is spread through unprotected Anal / Vaginal sex, sharing needles and mother to child, not oral sex.
Best Wishes
James
really low risk here, PEP is most likely going overboard. ultimately, go for the PEP if you feel so uncomfortable.