Hello dear Understand your concern Postinor 2 contain high progesterone and that is the reason of hormonal imbalance after taking Postinor 2. Chance of pregnancy is less as you did sex on 2nd day of period and that is safe period of your cycle. But chance of hormonal imbalance is high as you took tow tablet simultaneously. It cause temporary disruption of menstrual cycle like, Withdrawal bleeding will occur as you did take before the ovulation ans it will remain for 3-4 days. Sometime period may be delayed or excessive. But do not worry all are temporary side effects. Take healthy diet with iron supplements, drinks plenty of fluids, avoid stress and do exercise daily for 45-60 minutes. Hope this may help you Best regards Dr. Sagar