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

LMP vs. ovulation date

From: Sara (anonymous@obgyn.net)
Wed, 31 Jan 2001 12:33:38 -0600 (CST)

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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

Next message: Patty: "30 1/2 weeks pressure you know where"
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Next in thread: Lynn D. Montgomery, MD: "Re: LMP vs. ovulation date"
Reply: Lynn D. Montgomery, MD: "Re: LMP vs. ovulation date"

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