at what weeks do they do ultrasounds
Ultrasounds are common procedures during pregnancy. It's a non-invasive prenatal test used to ensure that Baby is developing properly, to check the baby's estimated size and to see how the baby, placenta and umbilical cord are positioned. At the 20-week ultrasound, it's also an opportunity to learn the baby's sex... if Baby is willing to reveal that information to you. The 20-week ultrasound is usually done with a special wand called a transducer that is used on the exterior of the belly. It allows the technician to see into the uterus, as shown above. Earlier ultrasounds may be conducted with a transvaginal probe (To give you a hint what that's like, they use a condom to sheath the probe before inserting it) because the baby is smaller.