Sonogram dating and birthdate
Instead, you will be offered a nuchal translucency ultrasound.This measures a collection of fluid under the skin at the back of a baby's neck. Nearly all ultrasound after 10 weeks can be done through your tummy, and most units ask you to come with a full bladder.But ultrasounds can also lift the lid on a few worries you might be having. The main reason for the ultrasound is to work out how many weeks pregnant you are, and to estimate your due date.
For advice on recognising signs that you are going into labour, or for information on some types of pain relief in labour, follow the links.Then the circumference of the head becomes the best way to measure your baby Nuchal translucency can be measured from 11 to 14 weeks to estimate the risk of Down's syndrome and other chromosomal abnormalities. Some hospitals offer a nuchal translucency ultrasound to all women at 11 to 14 weeks, but this isn't available everywhere. [Epub ahead of print, accessed April 2009] Gray JAM, Ward P. National Down's Syndrome Screening Programme for England: a handbook for staff. Sometimes having an ultrasound can cause unnecessary worry. Kettering: National Down's Syndrome Screening Programme. Please remember that the result will not necessarily be the day that your baby arrives.The actual date may be any time from 38 to 42 weeks in most pregnancies.