Hello everyone ? Gestation period is 33 weeks Who's gestational age di…

Hello everyone ? Gestation period is 33 weeks Who's gestational age differs from ultrasound? I have almost a 2-3 week difference ?‍♀️ The doctor also spreads it out by hand like this could happen, if at the beginning matched, and now they say the ultrasound is another one. Maybe someone already gave birth like that according to the ultrasound or according to their own?