Hello Sir Had Sex With Mf Husband On 16 Nov

hello sir had sex with mf husband on 16 nov 2016. and after that on 17 nov 2016. morning i was take a unwanted 72 and i had a period on 22 nov 2016. 2 day earlier on due date but problem is that i have no period the due date is 22 December 2016.. plzzzzzzzz help meee i am pregnant or not