A prenatal ultrasound test uses high-frequency sound waves to produce a picture of the womb, the baby and the placenta.
As well as being used to establish your baby's due date an ultrasound is also used to
An ultrasound is completely harmless and usually performed at around 20 weeks of pregnancy. You will have at least one ultrasound during your pregnancy however, your Doctor may want to do more ultrasounds to check on your babies growth or condition.
Most prenatal ultrasound procedures are performed on the surface of the skin using a gel as a conductive medium to aid in the quality of the image.
Ultrasound scans are completely painless, and to date there's no medical evidence to suggest that they can harm either the pregnant woman or her baby