Oral sex is not a risk. Unless you had unprotected vaginal or anal intercourse or shared IV drug needles, you didn't get HIV. I had the same thing on my tongue last week from hot soup. Don't over think it. Oral isn't a risk, that's it.
As i know burning tongue syndrome is a women thing , and i went to doctor and he said maybe be you burnt you tongue or becuase of smoking but this should go with two or three day. I used jel and cream nothing happend this feeling is continuo. And i read alot of articles for the reasons of this and the only thing is hiv.
You can't get HIV from oral so it has nothing to do with HIV. .
Could be burning tongue syndrome or an infection etc. so see doc if concerned.