Sonogram: Sometimes there is a discrepancy between how far along a person thinks they are and the actual gestational age. A sonogram can be done to see which is correct. An Obgyn can arrange this for you. A 20 week sonogram has about a 10 day margin of error. It is important to establish an accurate gestational age
Answered 1/14/2018
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A doctor has provided 1 answer
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