At my 20 week scan the machine put my dates 2 weeks earlier then my 6.6 and 12 week scans.
The sheet containing fetal measurements shows all of the measurements as right at the end of the scale and the femur length is actually off the scale! - by a fair distance.
The person that did the scan thought perhaps our dates were wrong. So baby isnt actually huge, but due 2 weeks earlier.
However, the 6.6 and 12 weeks scans showed as spot on for the dates.
Also the 6.6 week scan we saw a heartbeat, which I don't think we would have it was actually 4.6weeks.
Also my bfp wouldn't have been viable!
So this leads me to think that actually my dates are spot on and I am just growing a giant.
Has anyone else experience of having a baby showing as approx. 2 weeks too big?
I will be having another dating scan in a few weeks to see whats happening but any advise or ....... anything! 
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Pregnancy
large baby?
ShitStickSugar · 24/08/2014 21:06
Are you sure they didn't mean growth scan rather than dating scan?
In our department we would not think anything of those measurements at all! If the measurements are in the scale then they fit in with your dates, just at the larger end of the scale. Absolutely fine 
Also, if their machine are like our then the measurements/weeks taht show up on the screen are not the same as the charts on your report, they are just the factory settings on the machine. I wish there was an option to turn them off as I often get people commenting and questioning their dates!
Are you and your partner tall?
Thanks! This is excatly what I wanted. 1st baby so worrying about everything! 
Hi OP,
Sorry I am a bit late returning to this thread....
I am confused where from your report you are getting that you measure 2 weeks ahead?
Anyway, yes as Elmers points out, a difference of a few mm at 20 weeks can throw the measurements off by quite a big margin. Do you know if the sonographer double checked them at the time? If I get large measurements I always redo them as quite often It turns out I wasn't being careful enough the first time around.
Your report shows a head circumference (HC) and femur length (FL) just slightly above the 95th centile. However the abdominal circumference is still within the normal range but at the larger end of the scale. This suggests to me that baby is normal size for your dates, just at the bigger end of the scale. If your dates were wrong by as much as 2 weeks we would expect all measurements to be way off the scale. Or if dates are correct but baby is too large because of gestational diabetes for example, then the AC would be out of normal range but other measurements more likely to stay within normal range due to baby getting a big belly, but this is rare as early as 20 weeks.
Basically that was a very long winded way of saying that my professional opinion is that those measurements are fine 
. They may just be being extra vigilant by booking a growth scan, but no harm in that.
Thank you! The machine put my due date as 2 week earlier then the due date given at 12 weeks. I assumed this was automatically done when the measurements were input. When the due date was changed to the earlier one, all the little dots went to the middle of the line.
When he puts it as the due date 2 weeks later it shows as the graph I posted.
1st baby = massive worrier!!
Thank you! The machine put my due date as 2 week earlier then the due date given at 12 weeks. I assumed this was automatically done when the measurements were input. When the due date was changed to the earlier one, all the little dots went to the middle of the line.
When he puts it as the due date 2 weeks later it shows as the graph I posted.
1st baby = massive worrier!!
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