Pregnant?

My boyfriend and I had sex for the first time on friday. On friday, I was on my period. He pulled out and then came. When he came we realized that the condom had broke. So he didn’t cum inside me but there’s the possibility of precum. My period went away for a couple hours then came back later that night. My period finally ended on sunday. I’m on birthcontrol but missed one this month. It’s too late for me to take plan b and i’m only 15. Should i be worried that i’m pregnant?