Hello dear I understand your concern You missed one pill one pill and next day took both pill simultaneously. Just missing of one pill does not affect the effectiveness of the pill to prevent the pregnancy. Again you used condom that will prevent the sperm to enter into the vagina. To become pregnant, penetrative unprotected sexual intercourse is require. So do not worry, no chance of the pregnancy. So no need to take the I pill. Make habit to take novelon everyday on specific time by putting the remineder in the mobile. Avoid stress, take healthy diet, drink plenty of water and do regular exercise Hope this may help you Best regards Dr. Sagar