What Causes Delayed Period After Taking I-pill Followed By Unprotected Sex?

hey
24th of dec to 29th of dec normal periods date
i had an unprotected intercourse with my boyfriend on the 4th of jan
took and ipill on the 5th within 12 hours
today is the 19th of jan, and i have heard generally one gets early induced periods 5-7 days after taking pill
but today its already 14 days from the time i have taken the pill and havent got my induced periods yet.
am i pregnant or is it still normal to not get induced periods and to get your periods on the normal date of the previous month even after taking the pill. please help