Unprotected sex is one of the risks for HIV transmission. You did this twice? Having an unprotected vaginal sex exposure is a very low rate of risk, less than 1%. It is very doubtful that your symptoms are the result of HIV. And HIV is not diagnosed by symptoms. The only way HIV is diagnosed is through testing. If I were you, not because of the symptoms, but in general, I'd get an HIV test. Through a lab. They are pretty routine so don't get nervous about it or embarrassed. Your symptoms are that of a lot of things and again, HIV is never diagnosed because of cold/flu symptoms someone has. But take a test to be sure you are negative since you had unprotected vaginal.