I had my last month periods on 27th of november and on my 5th or 6th day of periods I had an unprotected sex without condom and after that I took unwanted 72 within 72 hours after taking unwanted 72 my bleeding started instantly. I had bleeding max 3-4 days after taking unwanted 72. Now in this month as usual I expected my periods on it's due date which is 27th of december but I didn't receive periods. I want to know in how many days I will got my periods please tell me. Because I am 16 years old and I don't want pregnancy at this age please help me and tell me when will I get my periods? What should I do?