I don't have gestational diabetes either and am measuring 2 weeks ahead. It makes me sad too kindof because in trying for a vbac.
My first was about 2wks ahead and I didn't have GD, in fact I had severe preeclamplsia and he stopped growing. Luckily he was measuring ahead because when they delivered a month early he was 7lbs 20oz.
Im measuring bigger as well and have no health issues. I am actually measuring full term and my doctor said I still have to wait :-( I am measuring 3 weeks ahead and Im 37 weeks and 3 days.
Me!!!! I did have gd last pregnancy but I've been tested many time and now at 37 wks I'm gd free and still measuring 2 wks ahead!