Baby in wrong position for dating scan

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Had a bit of a scare on Friday 15th and rescanned as precaution and again heartbeat seen very strong and fast and length 11mm, and told 7 weeks when I make can a dating scan be wrong by 6 weeks nearer 8 weeks as of today Monday 18th!I'm slightly concerned about this as they screwed my son's dates up and he ended up in SCBU due to there error and not believing either me or OH.Most dating scans are done with a trans-abdominal transducer and a fullish bladder.If the pregnancy is very early the gestation sac and fetus will not be big enough to see, so the transvaginal approach will give better pictures.When is it done: Ultrasound or sonar scans are routinely done at any time during pregnancy.

For example if you a tiny sac can be seen in the uterus, but the baby and its heart beat may not be detected yet.

Sometimes a trans-vaginal examination shows that your pregnancy is less advanced than expected.

The earlier the ultrasound is done, the more accurate it is at estimating the baby's due date.

The following are some of the uses of the ultrasound: Some hospitals are equipped with 3D ultrasound machines.

With the three-dimensional scan, a computer rapidly stores a series of images to create a life-like picture of the baby and doctors are able to see a cross-section of any part of the body.

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