Hello dear
Understand your concern.
Two reason for your problem.
Either pregnancy or side effects of pill.
You can confirm the pregnancy , 10 days after missed period or by USG or blood HCG level.
I pill, is a single tablet containing 1.5 mg of synthetic progestin,
Levonorgestrel.
For this emergency contraception to be effective, it is necessary to take one 1.5 mg pill of Levonorgestrel on a single day and within 72 hours of
unprotected intercourse.
Best results are seen when Unwanted 72 is taken quickly, within 72 hours of an event, as it takes 72 hours after fertilization for a woman’s body to produce a pregnancy.
If taken within 24 hours – up to 95% effective
If a woman should vomit after taking Unwanted 72, it is recommended to repeat the one time dose for effectiveness in pregnancy prevention.
Other causes of late period are:
Excessive stress, Change in life style, Late ovulation,
Excessive weight gain /loss, Drugs: Birth control pills, thyroid medication, Excessive tea and caffeine, Thyroid problem, Hormonal imbalance.
If period will not come:
Consult the gynecologist and do investigations like hormone profile, usg ,
ovarian follicle study,
endometrial biopsy.
Hope this may help you
Best regards
Dr. Sagar