A 31-year-old female asked:
Disclaimer

ok so i had my dating ultrasound. im a week ahead 8 weeks 2-3 days. they saying definitely over 8 weeks but i thought i was 7 weeks 4 days. we didn't even have to do transvaginal cause she said i'm definitely over 8 weeks. could they be wrong ?

1 doctor answer
Dr. Roger Duvivier
47 years experience Obstetrics and Gynecology
Accuracy may vary: A careful transvaginal (not transabdominal) pelvic sonogram (a "first trimester dating scan") performed by a certified sonographer using a well calibrated machine and proper scannig techniques is usually quite reliable and fairly accurate (plus or minus a few days) in dating your pregnancy. A follow up pregnancy sonogram in a few weeks should help answer your concerns and confirm your dates.
Answered on Oct 2, 2020

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Related questions:

A 21-year-old female asked:
Dr. Thomas Mahoney
36 years experience Obstetrics and Gynecology
Yes: While the dating based on sac size is questionable, it is usually accurate to within a few days--depends on type of ultrasound. An ultrasound at 11 we ... Read More
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A 29-year-old female asked:
Dr. Wayne Ingram
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Not necessarily: Due dating pregnancies is more accurate with more than one ultrasound performed. However, the 6 week ultrasound might be more accurate in dating your ... Read More
A 23-year-old female asked:
Dr. Anthony Filly
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Depends: On the size if the baby. Transabominally is fine as the baby increases in size. If it is really small then tv is bettet.
A 24-year-old female asked:
Dr. Steven Weissberg
55 years experience Obstetrics and Gynecology
Pretty good: Transvaginal ultrasounds, especially early in pregnancy and repeated can be pretty accurate in determining the length getation and thus can calculate ... Read More
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