Unprotected Sex!!

So I'm on the pill but I just had unprotected sex, should I be worried about pregnancy...? I mean I know I'm on the pill but I'm super paranoid about everything. I have an emergency contraceptive pill, should I take that, even tho I'm on birth control and that should already protect me from pregnancy, I just don't know what to do or if I even need to be worried. Someone help please!! 😬