Big baby??

Sasha • I'm 28, baby #2 due feb 6, 2016-another girl!!!
I'm 37+4, at my ultrasound today they said my baby girl is already 7 1/2 pounds (65th percentile) 😳😰 estimating her at 8 1/2-9lbs by 40wks 😟 my first was only 8lbs 4oz so I'm gettin nervous lol