Sorry for the Miss spelling I ment fungal and yeast infection
I do know you lol.
Yes, it's possible, in a few different ways.
If the person performing oral on you had oral yeast, or thrush as it's known, you could get it from them genitally.
If you used something to clean up after, like a strong cleanser, alcohol, etc., that can kill off the good bacteria on your skin that keeps fungi in check.
Some fungi spores can live a long time on surfaces. I don't know what you were sitting on when you received the oral sex, but if you were naked, it's possible you picked something up that way.
Now, a question for you - on Oct 29, you and I talked about going to see another doctor for these symptoms. Have you? :)