Measuring big... what to expect?!

Marisa
So I'm 37.3 weeks and measuring 40. Baby has always measured a little big in ultrasounds but my belly was never more than a week off in measurement. Now we're measuring a lot bigger. I have a growth scan on Monday (last ultrasound at 20 weeks he was measuring about 21, and my belly was still around 20). Just wondering if anyone has any experience with mom/baby measuring big and what they will do? Induce? Wait for natural labor? So far I have zero cervical progression but I wish I was progressing since he's measuring three weeks ahead now, I want him to be able to fit through the birth canal! Any thoughts/tips?? Thanks!!