STUPID QUESTION?!

So I had sex with a guy and 4 days later I experienced a sore throat with pus and swollen lymph nodes and a fever my doctor diagnosed me with tonsillitis fever went away within a day of the antibiotics and same with infection, lymph nodes also went down. Could those symptoms have been HIV symptoms and they got misdiagnosed as the tonsillitis or is that a stupid theory! I’m probably just paranoid