@julianeeley21, they're more accurate closer to 12 but some doctors use them as long as the nub is visible (don't know how accurate they are early on though)

I thought that those results were only accurate at around 12 weeks or so though the ultrasound is when I was 9 weeks but measuring at 8weeks and 3days?! I'll be perfectly happy with another girl but my husband really wants a boy😂 @ashsloan

Idk but the nub on the top picture looks parallel to the spine Which supposedly means girl. According to the Nub theory which some doctors are even using now.