Hi. We Had Our First Unprotected Sex Last Sunday, April

Hi. We had our first unprotected sex last Sunday, April 19.. And because I am not ready of getting pregnant, I took up 4 nordette pills in April 20, 1pm then another 4pills exactly 12hrs after.. Then unexpectedly, we had our unprotected sex again yesterday.. Will I still need to take nordette pills? I need an urgent answer plsss. Thank you doctors ;))