Fever is a fundmental symptoms of ARS, but you cannot go by symptoms. Only a test at the correct time will give you your status. You don't have to have any symptoms at all to still be infected with HIV.
Is fever a fundamental symptom for HIV....if you have a genuine risk of course..
An ARS fever can last 1-2 weeks. 99.5 is not a high temp. We're talking 101>higher.