8 days late AF???

I’ve literally never missed a period or been later then a day in my entire life except when I was pregnant with my son. With him I tested positive 5 days past my missed AF. I am now 8 days late. We weren’t trying but I think I might have messed up and we might have had sex around when I ovulated.

I’m honestly just really frustrated because I’m nauseous as can be, have serious good aversions, have a super sniffer, and am constipated. I’ve also been moody and headachy for about 2 weeks.