I have been using norethisterone, I ve taken last in end of July but after that I haven t taken it yet, but from the day I have started it, it hasn t cause any disturbance for me, but after my last period on end of September, after two weeks of period, I am having mix of brown and red discharge. Is it OK or normal? Do I m having it because of norethisterone as a break through bleeding or bleeding between periods?