I don't think anyone has every gotten HIV
from a single exposure of unprotected vaginal sex. Your symptoms do not reflect HIV
(5 chances in 10,000 according to the CDC). ARS symptoms are flu-like and are experienced a week to three weeks after exposure. However, there are a hundred other illnesses that can cause these symptoms which are way more likely than HIV. Plus, your partner probably wasn't infected. Your chances are 1/100,000 at worst. Don't worry, get tested at 6 weeks.