The anal sex, whether he ejaculated or not, was protected and that warrants no concern (and in case you stress, condom failures are very very very obvious).
Your symptoms are far too early for ARS and it sounds as though you may have caught a cold. Also symptoms are a poor way to diagnose HIV, the best way is to test.
In regards to the oral sex, giving a blowjob is seen as a low risk. (Getting a blowjob on the other hand is seen as no risk).
As you have your doubts about your recent sexual partner, I advise to go for a test and get a full STI screening.
This is more for other STI such as oral gonorrhoea, syphilis and chlamyida.
In the meantime try to stop googling the internet- there is a lot of agenda driven information or outdated information that will only cause you more stress. I suggest talking to your doctor, or contacting a sexual health clinic or sexual health call centre number.