The pill refers to a combined oral contraceptive pill or COCP. It is a form of birth control pill that combines progestogen and estrogen. It should be taken daily, at the same time each day. Missing a dosage for more than 12 hours can lessen the pill's effectiveness. The pill comes in 21-pill and 28-pill packets. Women need to skip a week with the 21-pill packet. With the 28-pill packet, the pills for the last week are placebos.