Is Pain Under the Right Rib Normal in the Third Trimester?

Feeling a sharp or dull pain under your right rib late in pregnancy can be unsettling. In many cases, it’s a common discomfort as your body and baby grow. However, some causes deserve prompt medical attention. Below is an overview of why you might feel pain under your right rib in the third trimester, when it’s likely harmless, warning signs to watch for, and tips to help you find relief.

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Why You May Feel Pain Under the Right Rib

1. Baby’s Position and Growth

   • As your uterus expands, it pushes upward on your diaphragm and rib cage.
   • A head-up (breech) or sideways (transverse) baby can press more sharply against your right ribs.

2. Stretching of Ligaments and Muscles

   • The round ligaments supporting your uterus can stretch unevenly, causing sharp, brief tugs under the ribs.
   • Muscles between your ribs (intercostal muscles) also stretch and fatigue.

3. Digestive Upsets

   • Hormones like progesterone relax your stomach valve, leading to acid reflux or heartburn that can feel like rib pain.
   • Slow digestion may produce gas or bloating, pressing on your right side.

4. Rib Cage Expansion

   • Your rib cage naturally flares out to make room for baby’s lungs. This widening can be sore, especially if you’re carrying large or multiple babies.

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Common, Generally Harmless Causes

• Round Ligament Pain
  Sudden, stabbing twinges when you change position—standing up, rolling over, coughing.

• Heartburn and Indigestion
  Burning or tightness under the ribs after meals, often accompanied by burping.

• Baby Kicks and Hiccups
  Strong kicks against your rib cage or rhythmic hiccups can cause temporary soreness.

• Muscle Strain
  Poor posture or lifting a toddler can tire your back and side muscles, radiating pain under the ribs.

If your pain is intermittent, mild to moderate, and improves with rest or a change in position, it’s likely one of these normal discomforts.

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When to Be Concerned

While many causes of pain under the right rib are harmless, a few conditions require swift medical evaluation:

• Preeclampsia or HELLP Syndrome
  Right upper-quadrant pain, especially under the ribs, may signal liver involvement.
  Watch for:

  • Severe headache
  • Blurred vision
  • Sudden swelling of hands, face, or feet
  • High blood pressure
  • Protein in the urine (your provider checks this)

• Gallbladder Issues (Gallstones or Cholecystitis)
  Hormonal changes slow gallbladder emptying, raising the risk of stones or inflammation.
  Signs include:

  • Intense, constant pain under right ribs
  • Pain that radiates to your back or right shoulder
  • Fever, chills, nausea or vomiting

• Acute Fatty Liver of Pregnancy
  A rare but serious condition with symptoms like:

  • Severe upper right abdominal pain
  • Nausea, vomiting
  • Yellowing of skin or eyes (jaundice)

• Pancreatitis
  Inflammation of the pancreas can feel like deep upper abdominal pain that spreads to your back, sometimes worse after eating.

If you experience any combination of the above symptoms, contact your healthcare provider immediately or go to the nearest emergency department.

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Practical Tips for Relief

Most rib discomfort responds well to simple lifestyle tweaks:

• Adjust Your Posture

  • Sit and stand tall, shoulders back.
  • Use a pregnancy pillow or wedge to support your rib cage while sleeping.

• Eat Smaller, More Frequent Meals

  • Reduces pressure on your diaphragm and stomach.
  • Choose low-acid, low-fat foods to minimize heartburn.

• Gentle Stretches and Prenatal Yoga

  • Side stretches can ease tension under your ribs.
  • Always move slowly—avoid overstretching.

• Warm Compress or Gentle Massage

  • A warm (not hot) pack over the area relaxes tight muscles.
  • Ask your partner or a licensed prenatal massage therapist for a light rub.

• Stay Hydrated

  • Dehydration can worsen cramping and muscle tightness.

• Over-the-Counter Antacids

  • Tums or calcium-based antacids can calm heartburn.
  • Always check with your provider before starting any new medication.

• Breathing Exercises

  • Deep belly breathing expands the lungs and eases diaphragm strain.

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Tracking and Checking Symptoms

If you’re ever unsure about your pain or its cause, it’s wise to keep track of:

• Timing: When does the pain start and end?
• Intensity: Rate it on a scale of 1–10.
• Triggers: Position changes, meals, exercise.
• Associated symptoms: Fever, swelling, vision changes.

For added peace of mind, consider doing a free, online symptom check, using the doctor approved Ubie Symptom Checker. It can help you sort through possible causes and decide whether you need to call your healthcare provider or head to urgent care.

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When to Call Your Healthcare Provider

Reach out if you notice any of the following:

• Pain that is severe or getting worse over time
• Pain accompanied by fever, chills, or persistent vomiting
• Jaundice (yellowing of skin or eyes)
• Signs of preeclampsia (headache, vision changes, hand/face swelling)
• Pain that wakes you up at night or doesn’t improve with home care

Always err on the side of caution. Your provider would rather reassure you than miss a serious issue.

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Key Takeaways

• Mild to moderate pain under the right rib in the third trimester is often normal due to baby growth, ligament stretching, and digestive changes.
• Pay attention to red-flag symptoms like severe pain, fever, vision problems, or swelling—these may indicate a more serious condition.
• Simple changes—posture adjustments, smaller meals, warm compresses, and prenatal exercises—can bring relief.
• If you’re ever uncertain, try a free, online symptom check, using the doctor approved Ubie Symptom Checker.
• Always speak to your doctor about anything that could be life threatening or serious.

Your comfort and safety matter. If at any point you feel that something isn’t right, don’t hesitate to contact your healthcare provider or seek immediate medical care. Wishing you a healthy, comfortable end to your pregnancy journey!