Is nausea and vomiting during the third trimester of pregnancy normal?

Aug 24, 2022 Source: Cainiu Health
Dr. Lv Aiming
Introduction
Nausea and vomiting in the third trimester of pregnancy are not normal. If nausea and vomiting occur abnormally during late pregnancy, prompt medical evaluation is essential to prevent delays in diagnosing other potential complications. Excess amniotic fluid (polyhydramnios) or multiple gestation (e.g., twins) can elevate the diaphragm, leading to gastrointestinal discomfort and a sensation of indigestion. Nausea and vomiting may also indicate an underlying gastrointestinal disorder.

When a new life develops inside the body, women naturally cease menstruation, and vaginal discharge may even decrease. As pregnancy progresses, physiological responses also change—some women experience nausea and dry heaving in late pregnancy. Is nausea and vomiting during the third trimester normal?

Is nausea and vomiting during the third trimester normal?

Nausea and vomiting during the third trimester are not normal. If nausea or vomiting occurs abnormally in late pregnancy, prompt medical evaluation is essential to avoid delays in diagnosing potential complications. For instance, excessive amniotic fluid (polyhydramnios) or multiple gestation (e.g., twins) can elevate the diaphragm, leading to gastrointestinal discomfort and symptoms resembling indigestion. Nausea and vomiting may also signal underlying gastrointestinal disorders—such as acute gastroenteritis causing impaired digestion—or hepatic/biliary conditions, including acute fatty liver of pregnancy.

The causes of nausea in late pregnancy vary—and so do appropriate treatments. If dietary factors trigger nausea—such as consuming greasy or cold foods—adjusting daily meals toward lighter, more easily digestible options and avoiding overeating may gradually alleviate symptoms. If nausea stems from endocrine dysregulation, establishing regular daily routines, ensuring adequate sleep, maintaining consistent bedtimes and wake-up times, avoiding late nights, and minimizing psychological stress are recommended. Severe nausea accompanied by loss of appetite and vomiting warrants suspicion of hepatic disorders such as viral hepatitis; in such cases, consultation with a physician and liver function testing are necessary.

Pregnant women should generally maintain a light diet, drink plenty of water, and avoid greasy or spicy foods. We hope this information proves helpful.