Baby measuring ahead

Jackie

So based on lmp which is the date we've been going by the whole pregnancy my due date is the 22nd but we ended up having an ultrasound today because baby was breech Monday and we were preparing for a ecv. Luckily he decided to flip head down yesterday but the tech said based on her measurements he'd be due the 6th. Have any of you had a similar experience and did your little one end up making their appearance early?