ARS symptoms are too vague and mimic hundreds of other more common infections. Second 90% of those who think they have ALL the ARS symptoms are actually suffering from a different ailment. Finally, the exposure you describe(a brief unprotected vaginal encounter) ,unless with a known HIV+ ,partner(highly unlikely) was a very low risk event.
Depending on how long since your exposure, testing may be able to provide you with your status. You can't do that by examining symptoms.