A member asked:

If my due date is november 17 2021, what would be my conception dates. will this be based on estimates? assuming i'm on 28 day cycle which i don't have. april 15th ultrasound said i was 9 weeks 3 days pregnant?

Q: if my due date is november 17 2021, what would be my conception dates. will this be based on estimates? assuming i'm on 28 day cycle which i don't have. april 15th ultrasound said i was 9 weeks 3 days pregnant?

: Evidence suggests that ultrasounds more accurately predict your due date than using your last menstrual period—but only in the first trimester and early second trimester (until roughly 20 weeks). Early ultrasound due dates have a margin of error of roughly 1.2 weeks.

A doctor has provided 1 answer

Dr. Yvette Kratzberg answered

Specializes in Pediatrics

Evidence suggests that ultrasounds more accurately predict your due date than using your last menstrual period—but only in the first trimester and early second trimester (until roughly 20 weeks). Early ultrasound due dates have a margin of error of roughly 1.2 weeks.

Dr Ferranti agreed

Answered 8/3/2021

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A member asked:

If my due date is november 17 2021, what would be my conception dates. will this be based on estimates? assuming i'm on 28 day cycle which i don't have. april 15th ultrasound said i was 9 weeks 3 days pregnant?

A doctor has provided 1 answer

Dr. Yvette Kratzberg answered

Dr Ferranti agreed

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