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A member asked:
Would there be a considerable difference in a first trimester u/s of a 12 week baby and a 10 week baby? wondering if my pregnancy was dated wrong.
3 doctors weighed in across 2 answers
Ultrasounds: Early ultrasounds are thought to be the most accurate for dating. It is very unlikely that your pregnancy dating was inaccurate.
Answered 2/12/2014
4.5k views
Thank
Maybe: A first trimester ultrasound is accurate within a few days to a week. A 2 week discrepancy may indicate incorrect dating. Speak with your doctor for clarification.
Answered 5/8/2014
4.5k views
Thank
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