Unprotected intercourse does carry a risk, although the length of time reduces the risk. Also, you don't know if your partner was HIV+, and that's rare, so the odds are heavily in your favor.
Take a test in a few days to know your status for sure. No comment on symptoms - they can't be used to diagnose HIV and yours are not HIV-specific at all.
Mahdi, as you have already been advised, possibility of catching HIV from a single, isolated and brief act of unprotected sex with someone of unknown health status is not very significant. Chances of your partner being an HIV+ individual are very low, bringing the probability very low.
However, since you had an exposure, suggest you to get yourself tested for HIV Duo (Antibody+Antigen) test anytime after 28 days of your exposure, collect your conclusive report and move on with your life.
Test is the only way for us to know our post exposure status accurately and conclusively. Symptoms are most of the time confusing and misleading therefore do not mean much. All the best