I had protected vaginal and unprotected oral sex one month back. After 2-3 days, I had throat infection with mild fever and headache . I took antibiotic for one week. Still the throat is not back to normal. I also sometimes have headache although it comes when I go out in the sun in extreme heat . I also feel weak with some body pains at times. I have no other symptoms of STIs or HIV. Can I relate these symptoms to the sexual activity and suspect of STI or HIV and get worried ? Thanks a lot.