Hello,
First of all, if the above date of unprotected sex is not within her fertile days (12th to 18th day of each 28-30 days cycle), then possibility of
pregnancy is quite low on the other day.
Second thing, when Nordette is used as emergency pill, it should be taken as 4 pills within 72hrs and max within 120 hrs and another 4 pills with 12 hrs gap from first dose.
Third, Nordette one pill daily is used for regular
contraception and not for EC.
Fourth, you need to confirm her pregnancy after 2 weeks of unprotected sex or 1 week after missed period through home pregnancy test.
Fifth, if she is not pregnant, external
hormonal pill can cause irregular bleeding, spotting,
abdominal cramp, delayed period, headache etc as side effect.
Hope, it helps for you. Practice safe sex with condom or
contraceptive pill.