No nub at 12.5 weeks?

I don't believe a nub was even visible at our 12.5 week ultrasound. Or, I'm assuming I needed to specifically ask the tech to zoom in there! Am I missing something?

Well, yes, you have to get the right profile view and the leg has to be out of the way because the leg blocks it most of the time when it isn't seen.

All babies have a nub, but you need a full body mid sagittal profile shot to capture the nub.