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A member asked:
2-3d period sept 8 i did not have sex again til sept 16. on oct 22 ultrasound said i was 5w4d which put us at sept 12. i'm confused w/ conception date?
A doctor has provided 1 answer
US may be off: Firsr trimester ultrasounds are good but not exact. They can be off by a week and 5 wks and 4 days is really early to get a food crl measurement for accuracy. Wait until your next ultrasound to clarify.
Answered 10/28/2012
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