BFP after bd 3 days before ovulation?

I have no idea why but my cycle had been completely off this month. BD’d every other day in what i thought was my fw, but i never got a positive opk and figured i just wasn’t going to ovulate this month. kept taking them anyway, suddenly this morning i get a positive opk and the last time i had sex was two days ago (monday night). He’s busy with night shifts and i’m booked during the days so no chance to try again...

Have any of you gotten pregnant when the only time you had sex was 3 or more days before ovulation?