Can i be pregnant?

So me and boyfriend had sex on October 20th then i had went on my period October 22nd .we recently had sex Sunday (with protection) he did buss because the condom slip off he tried to stick it in one more time then i told him i wanted to stop so we did and even said i got two more days to start my period can i be pregnant I’m so stressed out .when i start I’m going to ask my mom to put me on brith control I’m 16 btw