Early ultrasound accuracy dating conception
You should still have a ultrasound between 18 and 22 weeks because more detail can be seen as your baby grows bigger.
The dating ultrasound will also show if you're expecting twins, triplets or more.
The sonographer will put some gel on your tummy and will move a small hand-held device, called a transducer, over your skin to get views of your baby. National Down's Syndrome Screening Programme for England.
If your uterus is very deep in the pelvis or if you're overweight, you may be offered a vaginal ultrasound , which can get nearer to your baby. Kettering: National Down's Syndrome Screening Programme Westfall RE, Benoit C. The rhetoric of "natural" in natural childbirth: childbearing women's perspectives on prolonged pregnancy and induction of labour. The ultrasound scan may determine whether your pregnancy is currently experiencing miscarriage or not.
Your baby's head, limbs, hands and feet, and some organs can be seen, and - though looking for abnormalities isn't the purpose of the ultrasound - some major problems can be seen at this early stage.
If you have an irregular cycle, or if you've recently been taking the contraceptive pill, working out the date from your LMP isn't a very accurate method.