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A member asked:
If you ovulate later than the normal 14 days after lmp, would the dating ultrasound this and would it affect your due date?
A doctor has provided 1 answer
Yes: Estimated due dates are just that - estimates. 1st trimester dating ultrasounds are based entirely on size measurements, regardless of lmp/ovulattion. One measurement is the "crown rump length" and another is the average size of the gestational sac. If you conceived later, your ultrasound should measure smaller than the expected dates based on LMP and your due date would be later.
Answered 4/24/2015
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Related Questions
A member asked:
My dating ultrasound was not consistent with my lmp. It dated me a week further than I should be. What could be the cause of this?
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If my LMP was 9th sept but i didn't ovulate til 4 weeks later, will dr still use my LMP or my ultrasound due date?
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If my early dating u/s confirms my LMP dates, what can that tell me about when i most likely ovulated? Anything at all?
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If there is a four day difference between my LMP and ultrasound date, don't i go by ultrasound and could that mean i ovulate late?
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Why did my 9 week scan change my lmp date? Did i ovulate late. Is that what happend? Is dating scan at 9 weeks accurate to find ovulation?
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