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A 29-year-old female asked:

i'm due aug 30th according to ultrasound at 12 weeks, 1st ultrasound at 6 weeks said due date aug 29th, my lmp nov 18 need my conception date range :)?

2 doctor answers4 doctors weighed in
Dr. Anthony Filly
Radiology 26 years experience
US dates: The ultrasound dates are most accurate. If the us at "6 weeks" estimated that the baby was actually 6 weeks. You likely conceived about 4 weeks before that date.
Dr. Mazin Abdullah
Fertility Medicine 15 years experience
Early US: Early ultrasounds are very accurate. Your 12 week ultrasound and 6 week ultrasound are within a week of each other. Hence your due date is based on your early ultrasound.

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Similar questions

Jacksonville, NC
A 19-year-old female asked:

My LMP was unknown so on 7/20 doctors said i was 8w3d by ultrasound & told me my due date is 2/26/13 & that i conceived on 5/22 is this correct?

2 doctor answers3 doctors weighed in
Dr. Timothy Brown
Obstetrics and Gynecology 44 years experience
Yes: These are correct based on that sonogram although it is +/- a few days either way.
A 20-year-old female asked:

Can a conception date be off by a month with an 11 week ultrasound?

1 doctor answer1 doctor weighed in
Dr. Michael Sparacino
Family Medicine 37 years experience
Yes: This is a common occurance.
A 23-year-old female asked:

Due date by ultrasound is june 16th! what's my range of conception dates?

2 doctor answers2 doctors weighed in
Dr. Bruce J. Stringer
Radiology 47 years experience
June: You are just shy of 14 weeks today (12/15). Assuming you got the sono a few days ago, the due date should be within 1 week of the actual conception. You could expect to deliver pretty much any time in june but most likely within 7-10 days around the middle of the month. That assumes you carry to term.
A 23-year-old female asked:

If my ultrasound due date is june 16th, is there a chance i conceived october 5th?

1 doctor answer2 doctors weighed in
Dr. Jeff Livingston
Obstetrics and Gynecology 22 years experience
Sept 23 : If that is the correct due date then you got pregnant around sept 23.
HI
A member asked:

My LMP was 6/11/12. Ultrasound on 8/7/12 said ga was 7w5d, crl 1.44cm. What are possible dates of conception?

2 doctor answers3 doctors weighed in
Dr. Andrew Doe
Interventional Radiology 20 years experience
On or around: June 14th.

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Last updated Oct 5, 2020
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