Big baby!

Aubrie
I had an ultrasound today (35w 5d) to see my little girl's growth and found out she's measuring at 6lbs 13oz already!!! That's pretty large, right? The ultrasound technician didn't seem worried, but I sure am. How accurate is this measurement and has anyone else been in a similar situation? Am I looking at delivering a 9+ pound baby in 4 weeks?