I read somewhere that you shouldn't sleep on your back while pregnant because it can harm the baby. Is this true?
Yes. Women should not lie on their backs after their 20th week.
When you lie on your back during the last half of pregnancy, your enlarged uterus can compress two main blood vessels against your spine. The result: decreased blood flow to you or the baby. Think of it as a garden hose that gets a kink in it.
You'll probably find that you won't want to lie flat on your back anyway. When blood flow is compromised you can experience symptoms such as difficulty breathing, nausea, and faintness.
Lying on your left side is the most ideal position because it keeps your major blood vessels from being compressed and allows good circulation. If lying on your back is the most comfortable position for you, prop yourself up with a few pillows so you’re in a semi-upright position.
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