I had unprotected sex on 11th july. Within 30 hours takes unwanted 72. After 5 days gets bleeding for one day and no other side effects till today 14th august. I was very tensed/stressed due to some family problem right after my sex days. My last period was from 1st to 3rd july. My period cycle is of 28-30 days. My expected due date of period was 1-5 august but today is 14th August but no period and no sign of period. I am 17 years old. What is the chance of pregnancy, can period could be missed? Is due to stress or ecp period may be missed or shifted to next month? Please help in detail. I had already once used unwanted 72 in june first time and no side effects encountered and periods came at due date. am I pregnant or not?