Last month to eat emergency contraceptives this month menstrual delay how long

After taking emergency contraceptives will appear menstrual delay phenomenon, the delay time varies from person to person, generally not more than a week. If a long time does not appear menstruation, may be caused by contraceptive failure, should be admitted to the hospital for blood hcg test. Note: emergency contraceptives should not be taken more than three times a year, not more than two times a month.