I had my first u/s today. I should be about 9w2d based off LMP but they measured me at 7w4d. I track my cycles and with the timing of dtd and my bfp it doesn't make any sense. The Dr wasn't worried but does anyone have any experience measuring behind this early on?
DS: Born 8/2/12 at 31 Weeks due to unexplained PTL -------------- ISO a new baby to wear since 10/13 - DX: MFI IVF w/ ICSI - July '15: 13R, 13F, 1T - 6 Frosties - BFP - It split, It's Twins!
I had my first u/s today. I should be about 9w2d based off LMP but they measured me at 7w4d. I track my cycles and with the timing of dtd and my bfp it doesn't make any sense. The Dr wasn't worried but does anyone have any experience measuring behind this early on?
Are you sure you are behind? You once said your due date is April 3, which is the same as mine. I am 8/5 today. I was charting and knew about when I ovulated. The dating ultrasound was within a day. I typically had longer cycles and didn't ovulate until a week later, so 7/4 seems possible if we have similar LMPs. And, just because your cycle was consistently 28 days, doesn't mean that you ovulate on the 14th or that you couldn't have a random longer or shorter cycle. If the heart beat was a strong number and your doctor wasn't concerned, then I wouldn't be concerned. I am sure there is some variation in the dating ultrasounds.
My estimate by temping and previous cycles was April 3rd. My LMP due date was March 30th but I know that isn't accurate. They have changed my due date to April 10th or 11th. We did see a strong heartbeat. Even from my chart the measurements were a week off, which has me curious how accurate the dating u/s is.
I had my first u/s today. I should be about 9w2d based off LMP but they measured me at 7w4d. I track my cycles and with the timing of dtd and my bfp it doesn't make any sense. The Dr wasn't worried but does anyone have any experience measuring behind this early on?
Ultrasound measurement of the embryo or fetus in the first trimester (up to and including 13 6/7 weeks of gestation) is the most accurate method to establish or confirm gestational age (3, 4, 7–10). Up to and including 13 6/7 weeks of gestation, gestational age assessment based on measurement of the crown–rump length (CRL) has an accuracy of ± 5–7 days (11–14).
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Accuracy is 5-7 days. I think the LMP is putting you further along than what you really are. Sperm can live a while. I see nothing concerning.
Thank you! I was searching for something like this earlier. Everything I read said it could be up to 3-4 days off. This makes more sense.
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