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How can you calculate due date, if..

How can you calculate your due date if you know the date of conception but you don't remember when your LMP was??

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Asked by Anonymous at 11:56 AM on Mar. 24, 2009 in Pregnancy

Answers (6)
  • An ultrasound would probably be your best bet if your not sure about when it was.

    Answer by JennRN09 at 11:57 AM on Mar. 24, 2009


    Answer by LimoMOM5 at 11:57 AM on Mar. 24, 2009

  • if you know when conception occured, is your due date 280 days later?

    Answer by Anonymous at 12:04 PM on Mar. 24, 2009

  • an ultrasound is your best bet. the earlier the better

    Answer by heartsandskulls at 12:33 PM on Mar. 24, 2009

  • Go based in the day of conception. The way they estimate the due date is oftentimes competely offbase to begin with! They base it off a 28 day cycle and just assume when you ovulated and concieved on the 14th day of your cycle, even though most women don't run on a 28 day cycle! This has lead to many unnecessary inductions. Some women have even been told their child is failing to thrive inutero when they get an ultrasound because the baby's development does not match the bogus "due date." I would go 40 weeks from the time of conception and don't let any doctor tell you otherwise. Especially if they think you are going overdue! Congratulations!!

    Answer by burning_woman at 12:56 PM on Mar. 24, 2009

  • There are a number of due date calculator sites that can tell you your concepetion, due or lmp after you get all the info you can from your Dr. go to one of those sites and enter any info you have and it should be able to help you.

    XOXO, Jen

    Answer by jenReagan at 1:17 PM on Mar. 24, 2009

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