Does Postinor 2 Delay Periods, And Could Its Use With Dry Gin Be Causing This Delay?

Does postinor 2 delay period Because I used postinor 2 and the nurse asked me to use it with dry gin And I m supposed to have seen my period but it is yet to come Is it the drug I used that is delaying the period or it is normal Cus I have done pt several times it was negative What should I do ma/sir