How do you bring up your vagina smelling gross to your doctor?

I know I shouldn't be embarrassed to talk about things with my doctor but I feel like I might have a yeast infection or BV based off what I've read about each. My vagina has that fishy smell you're not supposed to have. I'm almost 21 and will be going in for my first Pap smear in a couple of months so I thought I'd talk to her about it then. I'm just not sure how to bring it up! I'm embarrassed to have her all up in my vagina without acknowledging the smell first. I'm not very experienced with medical exams/ testing/ treatment of the vagina as I am just starting to need to have that part of me examined at doctor appointments.