Heartburn during pregnancy will plague most moms-to-be at some point because progesterone, the hormone that relaxes muscles in pregnancy, also relaxes the stomach valve that keeps acid out of the. Really bad heartburn and acid reflux during pregnancy. Acid reflux is “very, very common” during pregnancy, says michelle collins, cnm, an assistant professor of nurse-midwifery at vanderbilt university more than half of all pregnant women will experience acid reflux.

really bad heartburn and acid reflux during pregnancy

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