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Nonstress test (NST): What it is and why you might need one during pregnancy

Don't worry, it's not stressful and there's no treadmill in sight. The nonstress test is a check of your baby's well-being. Here's more about why you might have one.
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Common Questions About Non Stress Test Pregnancy Answered By Harvard Health Publishing.

A nonstress test checks how your unborn baby’s heartrate changes with movement. A “reactive” or “reassuring” result means the baby’s heart rate went up two or more times during the test. A ...