I should be expecting my period tomorrow, however I am experiencing other pregnancy symptoms and I am not sure if they are pms. Can a discharge that s?

Can't tell. You do not state what the other symptoms are and why they would be confused with pms. If your period were due tomorrow, at best you would be only 1-2 weeks pregnant so i don't know what symptoms you are referring to this early in a pregnancy. Your reference to a discharge is incomplete and can't be answered at this time.