Take a 4th Generation (antibody and antigen) HIV test at 28 days or more. It will be definitive. The sooner you get tested the better it will be, seriously.
Inform exactly what you did
Otherwise we can't give you Amy advice.
If you are saying you had unprotected sex, vaginal/anal and are concerned you picked up hiv you owe it to yourself to test. At 28 days take a 4th generation test. Most experts believe this test at this time is conclusive. Its up to you but the CDC wants an antibody test at 12 wks to be sure.
Many ppl have gone through similar things and turned up negative. Test results trump symptoms. Until then try and stay off the internet. Don't need to fuel your anxiety.