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Four first trimester ultrasounds done at 7 8 10 12 week all come. Up with same conception date. What's it mean??

1 doctor weighed in
Dr. Robert Kwok
Pediatrics

In brief: Good estimates

One scan gives a good estimate of the conception date.
A second scan that gives the same estimate, just gives more confidence that the first scan's estimate is accurate. Accurate means plus or minus one week - because nobody knows exactly when conception happens. However, if a woman knows exactly when she had sex, that can point to the conception date. Normally, people don't get so many scans.

In brief: Good estimates

One scan gives a good estimate of the conception date.
A second scan that gives the same estimate, just gives more confidence that the first scan's estimate is accurate. Accurate means plus or minus one week - because nobody knows exactly when conception happens. However, if a woman knows exactly when she had sex, that can point to the conception date. Normally, people don't get so many scans.
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