@darryl Hello, Yacella is a type of combined oral contraceptive pill. It contains synthetic versions of two naturally occurring hormones: estrogen and progestogen. Taking a birth control pill can cause brown discharge. It is very common to have brown discharge while on birth control pills. Here are a few of the reasons for brown discharge- brown discharge is nothing but old blood, Spotting- in the initial 6 months of taking birth control pills, her body will try to adjust to the hormones in the pills but as a consequence of this is spotting or breakthrough bleeding that is brown in color. Consult your doctor if it has a Foul or fishy odor, you have Redness in the vaginal area, Swelling and soreness, and Pain or cramps in the abdomen. Thanks.