Hi, Welcome to HealthcareMagic Forum.
If you have had Unprotected sex recently, you should be getting a Urine Pregnancy
test done one week after missing your Periods using a Early Morning Urine Sample which is the ideal time to detect Pregnancy. If it turns out negative, you may have Missed Periods as a result of Hormonal
Imbalance as a result of taking Postinor. You can just wait for them to occur on their own. If they don't, you should be seeing a Gynecologist.