Third-Trimester Prenatal Checkups: Timeline & Complete Guide

Updated: 2025-09-06 · Reading time: ~6 mins · Prenatal care guide

The third trimester (28 weeks onward) is a crucial stage when the baby grows rapidly and prenatal visits become more frequent. Regular checkups help monitor fetal development and detect maternal risks early. Here’s a breakdown of the prenatal checkup timeline and common tests in late pregnancy—a must-know for new parents.

📅 Third-trimester checkup timeline

• 28–36 weeks: Every 2 weeks.
• After 36 weeks: Weekly visits until delivery.

🧪 Common third-trimester checkup items

1. Routine physical checks

• Weight, blood pressure, fundal height, and abdominal circumference
• Evaluation of fetal position and amniotic fluid levels

2. Laboratory tests

• Complete blood count: Screens for anemia.
• Urine test: Monitors protein levels to detect preeclampsia risk.
• Blood sugar test: Prevents or tracks gestational diabetes.

3. Fetal monitoring

• Non-stress test (NST): Checks for fetal oxygen levels and well-being.
• Ultrasound scan: Monitors growth, position, amniotic fluid volume, and placenta health.

4. Additional tests (as needed)

• Electrocardiogram (to evaluate maternal heart function).
• Liver and kidney function tests (if complications are suspected).
• Repeat screenings for hepatitis B, syphilis, and HIV.

⚠️ When to seek medical attention

If you notice abnormal fetal movement, bleeding, abdominal pain, or severe swelling, seek medical care immediately—even if it’s not your scheduled checkup time.

👩‍⚕️ Doctor’s advice

Prenatal checkups in the third trimester are essential for maternal and fetal safety. Follow your doctor’s schedule closely and don’t skip visits, even if you feel well.

Extended Reading

• 7 Early Signs of Pregnancy Every New Mom Should Know
• Safe Exercises for the Second Trimester: Boost Strength & Support Natural Birth
• How to Ease First-Trimester Anxiety? Psychologist-Recommended Methods
• Early Pregnancy Discomforts & Relief Tips

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This article is for general educational purposes only and does not replace medical advice. Prenatal schedules should always follow your doctor’s personalized recommendations.

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