Measuring a week ahead

Her growth scan and uterus measurements have consistently been measuring a week ahead. Anyone with experience-did this have any actual affect on your delivery date? (Not really your due date, but the day you actually delivered?)

I’m a FTM and I’m trying not to get excited about it, but that would put my delivery date on NYE instead of a week later on January 7 and that just sounds lovely. (I’m 30wk for clarification,, measuring 31.)