Big Baby

Anyone elses baby measuring alot big than they are suppose to? Im 28 weeks and 4 days and my due date was confirmed at 9 weeks with ultrasound and my cycle. I went for an ultrasound today and my little princess is huge. She is measuring over 31 weeks and weighs around 3lbs 3oz (should be around 2lbs 2oz at this point) this isnt my first baby all my babies have been on the bigger side but not this big. Im terrified of my delivery now :/