This would be considered high risk for you had an unprotected encounter with someone whose HIV status is unknown. Symptoms cannot be a way to diagnose HIV because symptoms are legion and can be something else other than HIV. Ejaculation had nothing to do with it. You are also exposed to many other stds such as gonorrhea, chlamydia, herpes, syphilis, and Hepatitis. The likelihood of HIV transmission from a single exposure is low however it does not mean you won't get it. There are nearby std clinics in your area or you can go to planned parenthood locations for testing. If you want, you can go to gettested.com or personallabs.com for online ordering in which they will tell you to go to labcorp locations in your area. It is meant to cut out the middleman which is the doc and the costs from a doctor's visit.
well any fever is there typical ARS symptoms comes with fever u didn't mention it so i guess its not ARS but it might be any other STD please test :
now for gonorrhea and chlamydia
2 weeks for hepatitis
8 weeks for hiv
16 weeks of herpes
hope i helped
and by the way hiv have no specific symptoms only testing can get ur real status