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A member asked:
If my lmp and ultrasound match to exact date does that mean i conceived 2 weeks after my lmp?
A doctor has provided 1 answer
Known LMP is the most accurate in determining an estimated date of delivery (EDD). A first trimester ultrasound is accurate within 7 days of that. However if the baby is measuring smaller or larger than 7 days to the EDD we often adjust the EDD to the ultrasound date. The later the ultrasound is performed, the less accurate the dating. There are pregnancy wheel apps free to download to track dates
Answered 11/27/2022
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