Big baby?

I had my 28 week appointment today at 28w4d. Belly should have measured around 29 but my doctor told me it was 32. And wants to do an ultra sound in 3 weeks.

I'm not freaking out, but my other kids kids were never ahead just always right where they should have been. And they were 8lbs babies.

Could I end up having a bigger baby then that? Do they have you go full term if baby measures bigger.

This is new territory for me, would love to here similar stories and how they turned out.

Thanks!!