Antibiotics and some soaps have given me yeast infections (I got one a 5 years old because of a bubble bath). It's nothing to be embarrassed about! Most women get yeast infections at some point in their lives. At the very least, you might want to try some over the counter yeast infection cream; however, I agree with everyone else you should see your doctor. Doctors, male and female, are understanding of these things (although, much like you, I do prefer a female).

As far as a PAP test, I've been getting them since I have been 15 (I wasn't sexually active until your age). Even if you're not sexually active, it's good to get checked out once a year.