None. You can not get HIV from giving or receiving oral sex. While there is what is called a theoretical risk, that is not a true risk as it just doesn't happen. No one has ever gotten HIV from oral sex. People get HIV from having intercourse with out a condom, either vaginal or anal or they share drug needles used intravenously. Saliva has enzymes in it that render the virus inactive--- as does air. So, you had no risk!