Is your first usually early or late?

Jennybake12

I know due dates are arbitrary to begin with, but I just don't get how my Dr. figured my due date.

Back on Nov 7th I had an ultrasound and was dated at 10 weeks 6 days then, so I counted out another 29 weeks and 1 day and my due date should be May 30th. But my Dr. says my due date is June 3rd. I asked him how is it June 3rd and he just looked at his little "wheel thing" that has dates on it and said "yep, it's June 3rd".

I have mostly been on the 2nd Tri board, but have also been crusing the May and June boards and not really sure where I belong.