Help!!!

Samantha👑 • 25. First baby due May 10th it's a little princess 👑
So I my original due date was May 10th i am 19 weeks 3 days! Yesterday at my anatomy scan she was measuring at 20 weeks! Should i change my due date on here to keep up with her development? Or should I keep her due date the same on here since the doctor said her due date never changes?!