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NHS Dating Scan

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Helpfulnesshope · 16/05/2025 08:33

Dating scan in April had me at 13 weeks 6 days GA. 3 days difference to my LMP. Does an ultrasound measure from LMP? If so, is 3 days difference ok?

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Are your children’s vaccines up to date?
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Helpfulnesshope · 16/05/2025 12:57

Grammarninja · 16/05/2025 11:52

That's exactly it. All dates will involve +14 days to theoretical .conception date. Pregnancy from conception is 38 weeks but 40 from a perfect 28 day cycle person's last lmp.

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You’ve been super helpful thank you xx

OP posts:
whatsit84 · 16/05/2025 12:58

Mine were further out, and I think I ovulated early. I like what someone above said about thinking of it as a due window rather than a date!

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