Early ultrasound

Brenna
I went in for an ultrasound at 6 weeks LMP (I'm pretty sure I wasn't quite at 6 weeks bc I ovulate a little later in my cycle) in the ultrasound they found the gestational sac and the yolk sac but no fetal pole yet. Dr said it could definitely still be too early to see much and I go back on Friday for a follow up. Anyone ever heard of this?