at my 12 week scan i was told iam due 3 august 2005 at my 20 week scan i was told they think im a week advanced therefore the baby would be due 27 july according to the 1st day of my last period im due 25 july therefore could the dates of the scans be wrong?
The later a scan is done, the greater the margin of error, I believe. Therefore the earlier scan is likely to be more accurate. However, I'd go by what you know of your cycle - if you have an idea of when you ovulated and / or when you had sex, so much the better.
All very interesting as, according to my 23 week scan, i am due a week later than LMP date but at my nuchal scan they thought i was due exactly on my LMP date. So which is more accurate early scan, late scan or LMP?
If your periods are extremely regular, or you know when you ovulated, or you only had sex once in that cycle, then I'd go with your own dates. If you're not sure of these, I'd go with the early scan - although even these have a margin +/- 5 days. Which might be comparable with the variability of one's menstrual cycle anyway. I wouldn't go with a late scan, particularly if it contradicts other information. Just my opinion.
There was one of those childbirth programs (Babes In The Wood I think) where a woman in her late 30's if I remember had her dates totally wrong. She had been given her due date at her first scan but when she got her next one, they had been about 6 weeks out.
Also, woman at my DH's work went for her dating scan and got told she was 21 weeks when she thought she was about 12. She had irregular periods and an empty nest before getting pregnant.
successful- i believe you if that helps. i have decided it is prob best 2 go by the last period and not the scan. when i was pregnant with my little girl the scan basically told me i fell pregnant on 26/1/03 i knew this wasnt right as i hadnt had sex a least 8days either side of that date and i spent that whole day down the pub with my family getting p...sed.