So my last period was on Valentine’s Day, just from calculating from there I would be 13 weeks. I’m not because I always ovulate around day 19-20 so at my dating scan they said beginning of pregnancy was may 3rd which is exactly cycle day 20 for me so it works.

Yesterday I had a scan, I was supposed to be 12 weeks tomorrow however baby is measuring 10 weeks 6 days. A strong heartbeat of 172 bpm and moving a lot so that’s not an issue.. I think it’s highly unlikely I ovulated March 9th…

So is a 8 day difference concerning? What could cause a tiny baby? Baby measures 42mm btw