Could ovral (ethinyl estradiol and norgestrel) emergency pill delay your menstruation?

I assume you are : Referring to use of multiple ovral (ethinyl estradiol and norgestrel) since it is not an emergency contraceptive when normally used. It could delay menstruation. Potential side effects w emergency contraception include menstrual flow changes (spotting, bleeding, early or late period). Take pregnancy test ; notify dr if your period is 7 or > days late.