Assertion: nausea | /r/AtLocation | first trimester
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Source sentences:
text: Nausea and vomiting is most common in the first trimester but can last until the baby is born, ranging from mild nausea to its most severe form, hyperemesis gravidarum, characterized by relentless vomiting that can lead to malnutrition, weight loss and electrolyte imbalance that endanger the health of both the mother and fetus.