Hello, We Had Unprotected Sex At 11th Of Sept And

Hello, we had unprotected sex at 11th of sept and my last period was 30th of augest, so after intercourse i took birth control pill (Yasmin) after 9 10 hours for only 3 days is it protected or not? Is there any chances of pregnancy? And am going for vacation on 22th September and i feel lil cramping so i need to know if i can have primulot N for a week to delay my periods? Is there any side effects? Urgent need to know?