How accurate are 12 week dating scans
I had to drink so much bloody water before my scan only to find there was a delay before my appointment – I felt like I was going to explode.
After a long first trimester, when you might well have had worries, or even wondered if there can really be a baby in there, it is a great comfort and a huge relief to see your baby on the screen and have the reassurance that everything is OK in there.It's not completely foolproof – but the dating scan is a much more accurate way to work out how far you are into pregnancy than calculating it by the date of your last period, which is the only method the midwives will have used so far to work out your due date.You may find at this scan your due date is altered on your notes.The sonographer will check your baby's spine for any visible abnormalities.
They will also look at the head, limbs, feet, heartbeat and check that the major organs are developing as they should.
This will give you a more precise estimated due date.