pregnancy symptoms ?

I am on birth control on the patch I use it perfectly. My bf doesn't pull out. Anywags my period is due Tuesday. In the last few days I've been peeing a lot. I told my coworker this and she jokingly said I could be pregnant. Now I got that in my head, anyways on top of all of that m vagina feels very very dry and weird almost like I'm getting another yeast infection I got one in like august. What can cause yeast infections ? Also is peeing a lot signs of early pregnancy ?