My first day of last period was 28th October, I had light spotting on November 13th and 14th and a positive pregnancy test on 6th of December. So, on my booking appointment, the midwife put my EDD at 6th of August...which was what I had also worked out from my dates.
Fast forward to January and my 12 week scan..."No, Mrs Loolah, you are 9 weeks +6, not 11 weeks + 6 and your due date is August 20th."
That's a full fortnight. I'd already had my BFP by the time they reckon I'd have implated.
Since 20 weeks, due to a kidney problem with bubs, I've been having monthly growth scans...and each one baby haas been measuring just shy of 2 weeks ahead of where I supposedly am...up to the last one at 35 weeks, where all his measurement had him at 37 weeks...
So, this has strengthened my suspicion that my original date of 6th of August is my actual due date....Is this just wishful thinking on my part or has anyone else had similar experience of the dates being so off and their baby coming closer to the LMP predicted due date than the dating scan EDD?
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Did your EDD from dating scan differ wildly from your LMP date?
loolah83 · 01/08/2015 11:55
Yes, I had a positive test on 1st Jan LMP was 3rd December making EDD 10th September. Scan gave me EDD as 4th October which suggested that I wasn't even pregnant when I had positive pregnancy test 
Ds was born on 15th September, midwife thought he was slightly overdue rather than 37 weeks as new EDD suggested so more in keeping with LMP rather than dating scan.
I measured "small" at 12 weeks and they knocked back my due date by almost 2 weeks. My daughter was born at 38 weeks .
They changed mine by 10 days, then told me I was measuring almost two weeks small for the rest of my pregnancy
Yes this happened to me recently. LMP around 5th June, got a positive pregnancy test on 5th July.
This would put my EDD at 10th March I think.
At what I thought was 6 weeks I went for an early scan for various reasons and was told there was only a small pregnancy sac there with nothing in it. The sonographer basically implied it was a blighted ovum and so I had a scan booked for a week later to check the progress if any. She did say it was possible that I had ovulated late and therefore what she was seeing was more like a 5 week sac.
A week later (at what would have been 7 weeks by original dates) I was told there was an embryo with a heart beat and was measuring 5.3 days....EDD now 19th March.
It's possible I ovulated late but this doesn't explain the positive test as presumably it was too early for a positive at that point 
I am cheered to read that other people have been dated backwards (so far that they couldn't have 'tested positive' either!) - and that the pregnancies have gone on to be viable.
One theory I wondered about was whether it's possible I (you?!) ovulated (and conceived) twice... The first time (for the positive test) did not progress for whatever reason but the second one (that shows on the scans) did?! It seems unlikely I know, but I just can't get my head round the whole testing positive too early to fit with the dates.
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