Period two weeks late could i be with child

My boyfriend and I had sex and our condom broke but we didn’t notice and kept going and when he was close to ejaculating he pulled out but didn’t actually ejaculate.I should get my period in four days and my ovulation is supposed to start in 18 days(so it says on my calender).What is the chance of me getting pregnant and what should i do?We were also considering taking the pill but i really don’t want to do so if not neccessary..

My boyfriend and I had sex and our condom broke but we didn’t notice and kept going and when he was close to ejaculating he pulled out but didn’t actually ejaculate.I should get my period in four days and my ovulation is supposed to start in 18 days(so it says on my calender).What is the chance of me getting pregnant and what should i do?We were also considering taking the pill but i really don’t want to do so if not neccessary..