I know this is naive but can you get pregnant a few days before your period?

Rachel

My husband and I have started having unprotected sex in hopes of conceiving! I know I’m not in my fertile window and I understand how ovulation works, but is there any chance of getting pregnant if I’m 3 days before my period due date? I think I’m just excited to finally be at this place of trying. I average a 30 day cycle. Thanks in advance!