Very few but definite chance of hiv after oral sex. However your your symptoms of sore throat is due to someother std or infection. Hiv doesn't produce symptoms rapidly. Go for confirmatory hiv testing once after month of exposure. And take treatment of your sore throat according to your doctor's advice

HIV infection through receiving cunnilingus ((using the mouth, lips and tongue to stimulate the female genitals) is considered a remote possibility. The person performing it would have to have bleeding gums, but it is unlikely that there would be enough blood to transmit HIV. Moreover, there have been no documented cases of HIV transmission through receiving cunnilingus, on the contrary there is a potential for transmission of HIV by performing cunnilingus, because vaginal fluid and menstrual blood (both of which can contain significant amounts of virus) can get into the mouth Though there have only been a very small number of case reports of HIV transmission attributed to performing cunnilingus . Hope this helps .