You had purulent angina (sypthoms etc.), nothing to do with HIV!
Unprotected sex can get you infected with HIV easily (if she did have it)!
I advise you to talk with your partner and get her tested because if she have it, she have it longer than you and her test would be more reliable than yours at the time! Either way, test yourself 3 months after exposure because if you do it sonner it might be false negative...
But one thing in your favor, chances are 1 in 1000 that she even have it so you dont need to panic!
What is purulent angina? I did some gogling on this but could not find the meaning..
As I said earlier, when I got the throat infection after 2 days I had a sore throat which lasted for 6 days (no medications taken) and second time which is exactly 2 weeks after the intercourse, it was severely inflated and had some pus in it and I took antibiotics and it went away in 4 days..
If one has ARS symptoms they come 2-4 weeks post exposure and last 1-2 weeks.