Is There A Chance Of Pregnancy After Taking The Unwanted 72 Pill?

I had unprotected sex with my boyfriend on 28th December 2022. After 2 hours of sexual intercourse I took unwanted 72 emergency contraceptive pill. After 6 days of taking pill, I had withdrawl bleeding on 3rd January 2023, and it continued for 6 days. My last period was on 21st December 2022. When will I get my period? Is there any chance of pregnancy?