Please calm my nerves.

Courtney
So I've been taking the birth control BeYaz since August and I've been diligent to take them on time everyday. 
My boyfriend and I have a lot of unprotected sex, but he always pulls out before he is finished. 
I am currently on the third day of the placebo pill and still haven't started my period. 
Is this normal? 
I usually started within the second day.