Hi After How Many Days Piriod Comewhen I Take Unwanted

hi
after how many days piriod comewhen i take unwanted 72 today is my 8 day i had only stomavch pain ?

and it is poasible no any withdrawl of blwwding or no piriod after taking unwanted 72 ?

and if not come it mean i have pragnent ? or many cases it not come ?

please briefly explain