Thank you for your inquiry. From what we gather from the question, you were asking about the risk of HIV transmission after receiving unprotected oral sex. From the information given, this scenario is determined to be Negligible Risk (there is no evidence or no documented cases of transmission. However, there is a theoretical possibility of transmission under certain extenuating circumstances).
The scenario mentioned above does not meet the three components of the Transmission Equation because saliva is not a bodily fluid that can carry the HIV virus. The reason there is a theoretical possibility of HIV transmission after receiving unprotected oral sex is if there was a large amount of blood present in the saliva that could have gained access to your bloodstream through the head of your penis. The best way to lower your risk of acquiring HIV is to wear a condom when engaging in any sexual activities.
In regards to your symptoms, an HIV infection is very unlikely to be the cause of your sore throat.
Recommendation: There are no evidence or no documented cases of transmission. Refer to a healthcare professional for more personalized answers.
AIDS Vancouver Helpline/Online, Marie