Can I ask how far along you are? Or do you have a family history of big babies or a very big husband?

I wouldn't think your baby would necessarily be big if you are only small. I'm 5"5 but only small in build and my ob wasn't at all concerned because my baby stayed fairly small the whole pg. She ended up being 5 lb 10 oz. The last u/s I had estimated her at over 6 lbs 2 wks before she was born, so I wouldn't be relying on u/s either!