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A member asked:
With my lmp i am 19 weeks but with my level 2 ultrasound the tech said i am 22 weeks. i did have sex a week before my period. could he be wrong?
A doctor has provided 1 answer
Margin of error: There is a margin of error with all tests and especially with fetal ultrasounds. The margin of error increases as the pregnancy progresses since some babies weigh 5 1/2 pounds at term and others weigh 10 pounds just as some adults are 5 feet tall and others are 6'8". Ask your OB about the margin of error in case. Hope this helps.
Answered 5/8/2015
2.9k views
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