Human: I've heard that if I'm pregnant, my doctor will want to do an ultrasound to check the baby's development. What does that procedure involve? Assistant: 
The first step in performing an ultrasound is to cleanse your uterus of any debris or mucus. This is done by inserting a probe into the cervix and then moving it around inside your body. Once the probe has been inserted, it will be moved back and forth to create images of your baby. These images can be used for monitoring growth and development, as well as diagnosing certain medical conditions.