Anyone?

So at my 28 week appointment the doctor told me I was measuring at 31 weeks so three weeks ahead. They are going to do an ultrasound at my 32 week appointment to do a weight check on my baby. Baby was 1lb 14oz at 24 weeks. Anyone had this happen? Was your baby big? C-section? My 1st born was 9lbs 10oz when I delivered her at 40 weeks and 2 days.