Can yeast infection harm my pregnancy?

I'm 8 weeks pregnant and for three days now I have noticed a yellow discharge on my undies. Today my vagina seems red and kinda sore, I will be seeing the doctor on wednesday but before then I would like to know what this could be. I have been eating a sweet minty candy a lot these days to help minimize my nausea and excess saliva. Wondering if it yeast infection and could it harm my baby?