36 weeks and measuring 39

Eliz • Pregnant again after three losses. ? this one sticks!
I had my 36 week appointment (I'm 36w3d) and the doctor said I'm measuring 39. She ordered a growth scan for next week and didn't seem too worried but now I'm getting nervous. I was a big baby (over 9lbs) and my husband and I are both big and tall people, but of course I'm worried something is wrong. Any advice?
Any