You do not want to do anything until you both have been treated and cleared.
If My Girl Has A Yeast Infection And I Eat Her Out Can I Get A Yeast Infection In My Mouth?
She needs to get it treated and if you have been sexually active you should also so you don't transfer it back and fourth. Don't do anything until you get it treated.
I certainly hope so, since you asked this question on a family site, where we try to keep it innocent enough for young people...*p