Hi, i am on watson's microgestin 1/20, a week before im supposed to get my period, im getting a brown discharge. what is it and what does it mean ?

Breakthrough bleed: Breakthrough bleeding (bleeding at the wrong time) is very common on birth control. It happens in about 1/3 of users. Its no big deal and usually self corrects over time. If you are not satisfied or it continues to happen then consider using a different birth control method. It is a common side effect and does not mean something is wrong or that the pill is not working. Brown = old blood.