Big baby??

Melissa • My husband and I were blessed on November 19 2015 with our son Nolan! Currently pregnant with baby #2 👨‍👩‍👧‍👦
Will I have a big baby just because I am considered "obese" or does it not work like that? Sorry if that's a silly question just curious cause I'm 20w3d now but at my 18w scan baby boy was measuring 6 days ahead of due date.. Dr and tech said just a growth spurt just not sure if I should be concerned for a big baby just because I am big! 😊