PREGNANCY-BIRTH Messages for January, 2001: Re: LMP vs. ovulation date

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Re: LMP vs. ovulation date

From: Lynn D. Montgomery, MD (anonymous@obgyn.net)
Wed, 31 Jan 2001 17:10:13 -0600 (CST)

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In reply to: Sara: "LMP vs. ovulation date"

At Wed, 31 Jan 2001, Sara wrote: >
>I've used the Fertility Awareness method (temperature & mucus charting)
>to get pregnant both times I've been pregnant. I know when I ovulated,
>or rather I know when my temperature went up. Both times it was day 18.
>My cycles varied from 29-36 days long.
>
>Both times I gave this information to my medical provider (once a OB,
>once a homebirth midwife). Both times they ignored the ovulation
>information and gave me a due date based on the LMP date. Is there any
>good reason for this?
>
>The first time I figured I was just being picky so I didn't bother the
>doctor about it. (I got a 1st trimester ultrasound that matched right
>up with what I said the date was.) But the second time I realized that
>those two days might make the difference between being induced or not
>(and in retrospect, it did). I didn't get an ultrasound that time, but
>talked the midwife into "letting" me go 2 days over what she said the
>due date was. I had the baby at 41 weeks 6 days.
>
>The homebirth didn't work out, so I'm with an OB next time around. He
>said that he would go by the LMP date as well. Is there a good reason
>for this? I thought that the ovulation date information from the
>temperature chart was very trustworthy, more so than LMP.
>
>--
>Sara
>

Since it is impossible to determine the exact date of ovulation except when following with ultrasound, most physicians will stick with the menstrual dating... Lynn

--
Lynn D. Montgomery, MD
Director, Maternal-Fetal Medicine
Rocky Mountain Perinatal Center
Missoula, Montana

**Note:  Opinions expressed here are for educational purposes only and, as such, do not constitute a physician-patient relationship.  This information is not intended to supplant the need for you to consult with your physician prior to choosing therapeutic options and/or interventions.

**Private e-mails cannot be entertained due to time constraints, consequently no private e-mails will receive a response.

**Thank you for your understanding ;-)

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In reply to: Sara: "LMP vs. ovulation date"

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