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If my ultrasound says 28wks and 3days what does that actually mean? like since lmp or conception

And how can an ultrasound pinpoint your pregnancy and lmp if your not sure about lmp i never understood how pregnancy could go off lmp if you didnt remember

Answer Question

Asked by Anonymous at 2:42 AM on May. 18, 2011 in Pregnancy

Answers (2)
  • LMP

    Answer by lilmommy10805 at 2:45 AM on May. 18, 2011

  • They do calculations based on the length of your babies bones and the length of the average baby's bones. These calculations are more accurate during early pregnancies when all babies are pretty much the same growth rate and less accurate later as the individual's size varies more. Ask the technician or doctor what the standard deviation is on his/her measurements.  If I remember correctly at 10-12 weeks it is accurate within 5 days. 


    Answer by LoveMyDog at 10:49 AM on May. 18, 2011

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