oh ya and my daughter was born at 37w2d and she weighed in at 7lb 11oz and 21in long and she was born in 2010.
i had my son exactly at 37w0d and he weighed in at 6lb 1oz and 20in long in 2008. but it varies between every baby.
There's no way really knowing or guessing. Both my boys were born at 37 weeks. My first weighed 7.5 and my second was 6.9. So your baby could be close to 8 pounds, more or less.
I would guess 6.5lb. Baby add on about half a lb per week.