might be a stupid question but...

sorry, its gonna be kinda long. anyone have any experience getting pregnant a few days before their period starts? I've googled tons of times, I feel super silly asking lol but my husband and I had sex all throughout my cycle starting from when my last period ended. I was supposed to start my period on Saturday (8-26) I'm now two days late and absolutely no sign of AF except my boobs hurting. is it possible that having sex somehow stalled my period or maybe I got pregnant and that's why I'm late? or if I am pregnant it's more likely that I already was pregnant right? anybody have any similar stories??