This Morning The Condom Slipped Off And My Boyfriend Ejaulacted

This morning the condom slipped off and my boyfriend ejaulacted inside of me. We both are currently not on Birth control. We both hold protection very high. We are both scared. I took the plan B pill by mouth approximately 8 hours after the incident. I am 5 days away from my normal period.
What are the chances I may be pregnant and what are my options now?
Thank you