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Sooner you take emergency contraceptive after sexual intercourse more effective is the drug. If u have taken emergency contraceptive pill
after 3 hrs then chances of pregnancy
is low but it cant be completely ruled out if intercourse occurred during the time of ovulation. Repeat pregnancy test after few days. If u have taken I pill
few days before your expected period chances of pregnancy is low and period are delayed due to hormonal
imbalance. consult a gynecologist for further management. take care.