Given the data you provided (brown discharge three days after the end of the menstrual period), it seems likely that you might be experiencing a prolonged menstrual period.


The brown color usually comes from blood that was exposed to oxygen for longer period and was thus more oxygenated. The reason why you lost more blood than usual might be because you stopped taking the birth control pill. It is common to have withdrawal bleeding (heavy and sometimes prolonged bleeding) after not having a period for several months. The body usually needs time to adjust to the normal body hormonal production.


You might want to wait for the next menstrual period. If you experience the same symptoms or the bleeding does not stop in the next couple of days, then you might want to visit a gynecologist for a physical examination and hormonal laboratory tests.