You didn't have a risk for HIV. What would make you think you have ARS?
Anyway...ARS symptoms don't manifest until 2-4 weeks post exposure, and they almost always include a very high temperature, a body rash, and an extremely sore throat. Nausea 48 hrs after a protected sex episode has NOTHING to do with HIV or ARS. Put it behind you and move on.
Thank you. I assume it is anxiety. But if a person was infected would they have ARS so quickly?
Oral sex is not a risk for HIV. Your nausea has nothing to do with HIV.