Have had brown discharge for 4 days & pink spotting on 5th, today. period due in 1 or 2 days. no bc. what is going on?

Early period: I recommend doing a pregnancy test, and repeat i 2 weeks if negative. If both negative and discharge persists, make appt to be evaluated for infection. Alsio use condomes until safely on another type of contraception.

Couple things: The most likely would be implantation bleeding from a new pregnancy. It could also be some premenstrual spotting, which happens now and then to women. If no full period this month check a pregnancy test.