HIV is not passed through receiving oral sex and the amount of time doesn’t make a difference. This is because the virus is not found in saliva. Although it may be theoretically possible to pass HIV when there is blood in the saliva, we do not see HIV being passed this way. From what you wrote, it doesn’t sound like there was any evidence that there was blood present.
A sore ear is not commonly a symptom of HIV infection. Also, most often symptoms related to early HIV infection, or seroconversion, happen within a few weeks after contact. Your symptoms showed up 54 days after contact, so it is unlikely that they are related to HIV infection.
I don’t think there is a strong medical reason for you to get tested, but there may be worthwhile to get tested so you can get an answer to your concerns about HIV.
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