What are my chances of pregnancy?

Cycle Day 12 and 13: Unprotected Sex (withdrawl)

Cycle Day 15: peak digital (negative opk strips)

Cycle day 16: peak on opk strips, egg white mucus

Cycle day 17: negative strips, creamy/sticky mucus

What are my chances of pregnancy? Im assuming I ovulated on cd y16 or 17. I was tracking to get to know my cycle but now im scared that I may be pregnant.