Contraceptive pills must be taken regularly to be effective. Intermittent use will reduce the contraceptive effect. If you miss a pill, take the missed pill as soon as you remember, and then take another pill at the time of the day when you should take the contraceptive pill. You should use other external contraceptive methods every time you have sexual intercourse during this menstrual cycle. If you miss two or more pills in a row within the first 5 days of taking the pills, and you have sexual intercourse during the missed period, you should seek emergency contraceptive methods from your doctor.