Condom popped .

Me and my boyfriend had unprotected sex yesterday morning around 10 a.m , he didn’t “cum “ inside me he stopped because he said it felt like he was about to cum , today we had sex again but it was protected since I found out I was fertile and didn’t even know . The condom popped twice he didn’t notice until it was over he didn’t cum inside me but the chances with pre cum is rare but possible .

Sn - I started my period the July 31 , and came off August 4th what are the chances of me conceiving ?