Is There A Risk Of Pregnancy If I Had Unprotected Sex On Day 16 Of My Cycle, And Took Postinor-2 Within A Day?

Please I had unprotected sex on the 16th day of my cycle but before the sex , I felt cramps on the 14th day which I usually experience anytime I ovulate. I took postinor 2 20hours later and the remaining pill 12 hours later... Is there any possibility of getting pregnant