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A: Your baby's heartbeat is one of the first things your doctor will look for on an ultrasound, a test that uses sound waves to give off visual images of your baby and placenta as well as your uterus and other pelvic organs.
When will I be able to hear my baby's heartbeat? At around 10 weeks, a Doppler ultrasound will allow you to hear your baby's heartbeat for the first timeâbut her heartbeat will already be visible on ultrasound by the time you are about six weeks pregnant. (To see what your baby's heartbeat looks like at six weeks, check out Drs. Doubilet and Benson's site: yourdevelopingbaby.com.) The first detection of the baby's heartbeat has both medical and emotional significance, says Dr. Doubilet.