Third trimester questions !!!?

My due date is November 11th from my very 1st dr's appointment, but when I went for an ultrasound at 17 weeks, they bumped me up a few days as I was measuring big. So I started going by that day (on how many weeks I was) ... I went for an ultrasound a few weeks back supposed to be at 31 weeks and 3 days pregnant but the ultrasound said that baby is measuring at 32 weeks and 3 days, so a whole nother week. Now I am 35 weeks today (going by the last ultrasound) .. so would my due date still be novemeber 11th? of would I say earlier? cause going by november 11th I would be close to 42 weeks... so confused please help !!!