2 weeks off as gestational age

sundas

Hi everyone,

I am 27 weeks and 2 days pregnant and in a recent checkup/ultrasound, I came to know that a baby's gestational age from the stomach or middle part is 2 week off i-e. 25 weeks

My doctor said it's normal and we will track it further in a growth scan but is it really normal and what could be the reason for it?