Why is morning sickness getting worse at 14 weeks of pregnancy, and what should I do?

Nov 14, 2025 Source: Cainiu Health

Dr. Zhang Lu

Introduction

Under normal circumstances, worsening of morning sickness at 14 weeks of pregnancy may be caused by factors such as hormonal fluctuations rebounding, excessive mental stress, gastroenteritis during pregnancy, gastroesophageal reflux disease (GERD), or intrahepatic cholestasis of pregnancy. It is recommended to seek timely medical attention, identify the underlying cause, and then improve symptoms under a doctor's guidance through general management, medication, or other treatments. In daily life, attention should be paid to food hygiene, and ingredients should be thoroughly cooked before consumption.

Under normal circumstances, worsening nausea and vomiting at 14 weeks of pregnancy may be caused by hormonal fluctuations rebounding, excessive mental stress, gastroenteritis during pregnancy, gastroesophageal reflux disease (GERD), or intrahepatic cholestasis of pregnancy. It is recommended to seek medical attention promptly, identify the underlying cause, and then improve symptoms under a doctor's guidance through general management, medication, and other approaches. Specific analyses are as follows:

1. Hormonal fluctuation rebound: At 14 weeks of pregnancy, some women may experience a temporary rise in estrogen and human chorionic gonadotropin (hCG), which can stimulate the gastrointestinal mucosa and lead to worsened morning sickness. Eat small, frequent meals and choose light foods such as soda crackers and steamed apples. Avoid greasy and spicy foods, and take a gentle walk after meals to reduce gastrointestinal burden.

2. Excessive mental stress: Anxiety due to concerns about fetal development or changes in daily life during pregnancy can disrupt neuroendocrine regulation and exacerbate nausea and vomiting. Family members should provide companionship and emotional support. Engaging in 20 minutes of prenatal yoga or listening to soothing music daily can help relax the mind and relieve psychological stress.

3. Gastroenteritis during pregnancy: Poor hygiene in diet may lead to bacterial infection of the gastrointestinal tract, manifesting as worsened nausea, bloating, and diarrhea. Follow your doctor’s instructions to use medications such as Bifidobacterium triple viable powder, montmorillonite powder, and oral rehydration salts III to regulate intestinal flora, replenish fluids and electrolytes, and prevent dehydration.

4. Gastroesophageal reflux disease (GERD): As the uterus enlarges, it may compress the stomach, causing gastric acid to reflux into the esophagus, leading to increased nausea accompanied by heartburn. Avoid lying down immediately after meals. Elevate the upper body by 15–30 degrees while sleeping. Take medications such as hydrotalcite chewable tablets, sodium bicarbonate tablets, or omeprazole enteric-coated capsules as directed by your physician to alleviate symptoms.

5. Intrahepatic cholestasis of pregnancy: Abnormal bile acid metabolism irritates the gastrointestinal tract, resulting in aggravated nausea and vomiting along with skin itching. Follow medical advice to use ursodeoxycholic acid capsules, ademetionine disulfonate enteric-coated tablets, and vitamin C tablets to lower bile acid levels and protect liver function.

In daily life, maintain good dietary hygiene and ensure all food is thoroughly cooked before consumption. Wear loose, comfortable clothing to avoid abdominal pressure. Maintain a regular sleep schedule and avoid staying up late. Through proper scientific care, morning sickness can be alleviated, helping to safeguard maternal and fetal health.

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