The only risks for HIV in adults are:
1) Having unprotected (no condom) penetrative anal or vaginal sex, OR
2) Sharing IV drug equipment with other IV drug users.
No other event that you can think of, including the event you mentioned, puts you at risk for HIV. This is a NO RISK event. You do not need to test for HIV. No one has ever been infected by receiving oral sex, and you will not be the first.