Missed period ?

Felicia

I recently flew home for 6 days. I was expecting my period to come on the first day and it was supposed to last until the 6th day. I had unprotected sex about 3 times with my fiancé while I was there and I still haven’t gotten my period and today is day 7 of my expected period... what are the chances that I’m pregnant, even though we use the pullout method. AND... how normal is it to be 7 days late?