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Managing Nausea in the Third Trimester: Essential Insights

Mar 01, 2024

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Nausea in the third trimester affects 15 to 20 percent of pregnant individuals, with some experiencing symptoms up until delivery, as the Wolters Kluwer article states. This discomfort is often due to hormonal fluctuations, increased physical pressure from the growing baby, and emotional stress. While challenging, understanding the causes, risk factors, and effective management strategies can significantly alleviate symptoms. Proper hydration, dietary adjustments, and rest, along with consulting healthcare providers for severe cases, are crucial for managing this condition. Awareness and proactive treatment can help expectant mothers navigate this common pregnancy issue, ensuring both maternal and fetal health.

nausea in third trimester

Causes of Nausea in the Third Trimester

Hormonal Changes

One of the primary culprits behind nausea in the third trimester is the significant hormonal fluctuations that occur during pregnancy. As the body prepares for childbirth, levels of certain hormones, such as estrogen and progesterone, continue to rise. These hormonal adjustments can affect the digestive system, leading to slower digestion and increased sensitivity to smells and tastes, which can trigger nausea.

Physical Pressure

As the baby grows, the increasing size and weight can put physical pressure on a mother's stomach and intestines. This pressure can cause discomfort and contribute to feelings of nausea. Additionally, the expanded uterus restricts the normal function of the stomach and intestines, leading to symptoms like heartburn and indigestion, which are often accompanied by nausea.

Stress and Fatigue

The emotional and physical stress of pregnancy, along with the fatigue that often accompanies it, can also play a significant role in triggering nausea during the third trimester. Stress can affect gastrointestinal function, leading to increased nausea, while fatigue can lower the body’s ability to cope with discomfort.

Risk Factors for Nausea in the Third Trimester

Several factors can increase the likelihood of experiencing nausea in the late stages of pregnancy. Understanding these risk factors can help expectant mothers prepare and possibly mitigate the intensity of their symptoms.

  • History of Nausea: Women who have experienced nausea and vomiting in previous pregnancies or earlier stages of the current pregnancy are more likely to experience nausea in the third trimester.
  • Multiple Pregnancies: Carrying twins or multiples can increase the risk of third trimester nausea due to higher levels of hormonal changes and greater physical pressure on the mother’s body.
  • Gestational Diabetes: This condition can influence how your body processes food and can contribute to the development of nausea.
  • Hydration and Diet: Inadequate hydration and certain dietary habits can exacerbate nausea during pregnancy. A lack of balanced nutrition affects how your body manages the changes it’s going through.


Understanding these causes and risk factors is crucial for managing third trimester nausea effectively. By identifying what may contribute to nausea, expectant mothers can take proactive steps to alleviate their symptoms and enjoy a more comfortable pregnancy. Whether it's adapting dietary habits, managing stress levels, or simply finding the right support system, there are various ways to navigate this challenging yet rewarding time.

Complications Associated with Third Trimester Nausea

Nausea during the third trimester, although common, can lead to complications if not properly managed. Persistent nausea and vomiting can result in dehydration, nutritional deficiencies, and weight loss, which are not only detrimental to the mother's health but can also impact fetal development. Moreover, severe and uncontrolled nausea can contribute to emotional stress and anxiety, complicating the pregnancy experience.

Treatment Options for Nausea in the Third Trimester

Managing nausea during the third trimester involves a combination of lifestyle modifications, dietary changes, and, in some cases, medical intervention. It's crucial to consult with a healthcare provider before trying any new treatment method, especially during pregnancy.

Dietary Adjustments

Making small, frequent meals can help manage nausea by avoiding an empty stomach, which often triggers nausea. Including foods that are easy to digest and avoiding spicy, fatty, or overly sweet foods can also be beneficial. Foods like ginger and peppermint are natural remedies known to help alleviate nausea.


Staying well-hydrated is crucial. Small, frequent sips of water throughout the day can prevent dehydration. Herbal teas, such as ginger tea, may also help soothe the stomach. However, it's important to avoid caffeine.

Rest and Relaxation

Adequate rest is vital for managing nausea. Stress and fatigue can worsen symptoms, so finding ways to relax and get enough sleep can be helpful. Techniques like prenatal yoga and meditation can also offer relief.

Physical Activity

Moderate exercise can improve digestion and reduce stress, helping to alleviate nausea. Walking or prenatal yoga can be beneficial, but it's important to listen to your body and avoid overexertion.

Medical Consultation

For some women, dietary and lifestyle changes may not be enough to control nausea in the third trimester. In these cases, it's essential to consult with a healthcare provider. They can offer advice and, if necessary, prescribe treatments that are safe during pregnancy.


For a preliminary assessment of your symptoms and to better understand potential causes, visit our Symptom Checker page for personalized insights.

Prevention of Nausea in the Third Trimester

While it may not be possible to prevent nausea during pregnancy completely, there are steps that can be taken to reduce its frequency and severity:

  • Eat small, frequent meals to keep the stomach from becoming too full or too empty.
  • Stay hydrated by drinking plenty of fluids throughout the day.
  • Avoid nausea triggers, such as certain smells or foods that have caused nausea in the past.
  • Get plenty of rest and practice stress-reduction techniques to help manage fatigue and emotional stress.
  • Consider vitamin B6 supplements, as they have been shown to reduce the severity of nausea during pregnancy. However, it's essential to discuss this with a healthcare provider before starting any supplement.


By incorporating these strategies and being proactive about treatment, expectant mothers can manage nausea in the third trimester more effectively, ensuring a healthier and more comfortable pregnancy journey.

Key Takeaways

  • Understand the Causes: Hormonal changes, physical pressure from the growing fetus, and stress are primary factors contributing to nausea in the third trimester.
  • Identify Risk Factors: A history of nausea in previous pregnancies, multiple pregnancies, and certain health conditions can increase the likelihood of experiencing third trimester nausea.
  • Recognize Potential Complications: Unmanaged nausea can lead to dehydration, nutritional deficiencies, and emotional stress, affecting both mother and baby.
  • Explore Treatment Options: Dietary adjustments, staying hydrated, rest, moderate physical activity, and consulting with healthcare providers are effective strategies for managing nausea.
  • Prevention Is Key: Though not always entirely preventable, lifestyle changes can significantly reduce the severity and frequency of nausea in the third trimester.
  • Seek Professional Advice: Always consult with a healthcare provider before trying new treatments or if nausea becomes severe.

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Please Note! This tool is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always consult a professional before taking any actions.

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