ultrasound and due date

👣Beautiful_mommy3👣 • mother of two wonderful boys and one beautiful girl

so today I have a ultrasound but I was just told my due date change soo would I go off the new one or the old one I'm confused they told me she is growing

my old due date was Sept 30 2016 which would make me 25 weeks 2 days

the new due date is Sept 25 2016 which would make me 26 weeks 1 day