I had unprotected sex on 10th July, after that within 30 hours take unwanted 72 but no bleeding within 10 days and now, today's 11th August ,my due date of period was 1-3 August ,my cycle is if 28-30 days but still my period not come .after sex I was very tensed/ stressed about 10 -15 days due to various reason. What is the chances of pregnancy? Could I missed period due to unwanted 72 and stress? Please help I had used unwanted 72 before this one times in June month and there was no bleeding but period comes on due date.