pls i need some advices

is it normal to have delayed period ?im 3days late and im taking it for 16days. it was my first time taking contraceptive pills ( Dianne). 😔 im really scared bcos im regular 😔 never try pregnancy test and never feel symptoms of pregnancy . i dunno what to do im stressed also minding this problem pls help me🙏 thankyou so much n advance #advicepls