Can you get pregnant a week after taking the morning after pill postella1 through sexual intercourse?

Its possible...: Postella is an emergency contraception pill available in Australia. Like most emergency contraception, it works by delaying ovulation. If you use it and then have unprotected intercourse a week later, its possible that you had intercourse during the time of delayed ovulation and could get pregnant. Postella is for emergencies. PLan A is getting on a regular Birth-Control pills. Best wishes!