If you mean a: Pregnancy ultrasound, yes -- that's very common. Don't worry about it. Talk w/your doctor.
Answered 8/12/2013
4.9k views
Unusual: If you are asking about OB ultrasounds before 10 weeks menstrual age, i would have to say that being a week off is more than i would expect for a properly done study. The differences in size and appearance at this stage changes almost by the day. Being a week off expected dates would suggest to me that the estimate of the conception date was off.
Answered 6/10/2014
4.9k views
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