So you had unprotected sex. Well, then you will need to take a test. Any will be accurate after 5 months. But symptoms are not used to diagnose HIV nor are they an indication of HIV. And one time sex is a low risk of HIV transmission. So, most likely, you don't have HIV. Test to be sure.
What was your possible risk? The only way that people get HIV is from unprotected vaginal or anal sex or sharing of IV drug needles. That's it. HIV virus is fragile and is inactivated by air and saliva. And it's never diagnosed by symptoms. Sore throats, oral thrush, are all common. They are every day things that people randomly get. Only tests diagnose HIV.