What causes abdominal pain at 30 weeks of pregnancy?

Generally, abdominal pain at 30 weeks of pregnancy may be caused by excessive fatigue, uterine enlargement, uterine contractions, acute gastroenteritis, or preterm labor. Specific analyses are as follows:

1. Excessive Fatigue

If a pregnant woman engages in intense physical activity or heavy labor at 30 weeks gestation, it may stretch the abdominal muscles and uterine ligaments, leading to abdominal pain. Symptoms can be relieved with local heat application. Avoid lifting heavy objects and ensure adequate rest.

2. Uterine Enlargement

During pregnancy, the fetus and uterus continuously grow and expand, which may compress and stretch surrounding organs and tissues, causing abdominal discomfort. This condition typically does not require special treatment. Pregnant women should rest adequately and avoid overexertion. In late pregnancy, lying on the side can help alleviate symptoms.

3. Uterine Contractions

Uterine contractions at 30 weeks of pregnancy may pull on ligaments around the uterus, resulting in abdominal pain. Gentle local massage may help relieve the discomfort.

4. Acute Gastroenteritis

Pregnant women may develop gastrointestinal inflammation due to bacterial infection or improper diet, leading to acute gastroenteritis. This condition often causes intermittent cramping abdominal pain, possibly accompanied by nausea, vomiting, diarrhea, and fever. During an acute episode, food intake should be temporarily stopped to prevent worsening of symptoms. After symptoms subside, a light diet—such as millet porridge or plain rice—is recommended. Drinking moderate amounts of lightly salted water or warm water helps replenish lost electrolytes. If symptoms are severe, prompt medical attention is necessary, and intravenous fluid therapy may be administered under medical guidance.

5. Preterm Labor

Abdominal pain at 30 weeks may indicate preterm labor caused by uterine contractions. In severe cases, symptoms such as vaginal bleeding or fluid leakage may occur. Women experiencing signs of preterm labor should remain in bed and avoid getting up or moving around for a period of time, as activity could worsen symptoms. Medications such as progesterone capsules, compound estradiol tablets, or vitamin E softgels may be used under a doctor's supervision for treatment.

If abdominal pain occurs at 30 weeks of pregnancy, prompt medical evaluation is recommended to avoid adverse effects on fetal development. Pregnant women should ensure adequate rest, avoid overexertion, and maintain a positive mood to reduce stress. At 30 weeks, sleeping on the left side is recommended; lying flat on the back or stomach can negatively affect both mother and fetus. Placing a pillow under the legs may improve lower limb circulation and reduce leg swelling. A balanced, nutritious diet is essential—avoid spicy, stimulating, or overly greasy foods.