Help! Could I be pregnant?

Sorry I don’t know much about this but your help is very appreciated!

So I had unprotected sex while I was ovulating for two days straight he always pulled out however he could have had pre cum .. I did also take a plan b after 48 hours of unprotected sex and still had unprotected sex once more on the evening of the 3rd ovulating day..

Could plan b have worked?

Thank you