Quick answer: You’re getting up from the couch and suddenly — a sharp, stabbing pain on one side of your lower abdomen.
You’re getting up from the couch and suddenly — a sharp, stabbing pain on one side of your lower abdomen. Alarming the first time, but round ligament pain is one of the most common pregnancy symptoms from the second trimester onward, and it’s almost always completely harmless.
What Causes Round Ligament Pain
The round ligaments are two thick bands of fibrous tissue running from the top of the uterus through the inguinal canal into the labia. As the uterus grows rapidly from around week 12 onward, these ligaments must stretch and lengthen to support it. Pain occurs when sudden movement causes the ligaments to contract rapidly — like a rubber band being snapped. It’s most common between weeks 14–27, can occur throughout pregnancy, and feels like a sharp, stabbing, or pulling pain on one or both sides of the lower abdomen, often extending into the groin or hip. It typically lasts seconds to a minute and resolves on its own.
How to Recognize Round Ligament Pain
Classic triggers: sudden position changes (rolling over in bed, standing up quickly from sitting), coughing, sneezing or laughing, getting out of a car, and exercise involving hip flexion. Distinguishing features: it’s brief (resolves within 1–2 minutes), sharp rather than dull, clearly associated with movement, and located on one or both sides of the lower abdomen. If pain is severe and constant, accompanied by fever or bleeding, or doesn’t resolve within a few minutes — contact your provider. These are not features of round ligament pain.
Relief Positions That Work
Bend toward the pain: Flexing the hip on the affected side relaxes the ligament. This is the fastest relief available — curl slightly toward the pain. Move more slowly: Round ligament pain is almost entirely preventable by slowing movements deliberately. Use your arms to push up from lying, stand slowly from sitting, move in stages rather than sudden transitions. Warm compress: A warm (not hot) pack on the affected area relaxes the ligament effectively. Warm bath: Soaking in a warm bath helps with severe or persistent episodes. Support belt: A maternity support belt reduces the weight tension on round ligaments during activity.
The Role of a Belly Band
A maternity support belt provides external uterine support, reducing tension on round ligaments during activity. Most effective for women whose pain is triggered by walking or exercise. Look for a belt that goes under the bump (not a full abdominal binder), is adjustable, can be worn over clothes, and doesn’t restrict breathing. Wear during triggering activities and remove when resting. A women’s health physiotherapist can provide personalized guidance if pain is severe.
When It’s Not Round Ligament Pain
Contact your provider for: pain that doesn’t resolve within a few minutes, constant rather than intermittent pain, pain with fever or vomiting, pain with urination (possible UTI or kidney infection), bleeding or fluid leaking, or pain following a fall or injury. Right-sided lower abdominal pain should always be evaluated if severe or persistent — appendicitis also presents on the right. In the third trimester, any rhythmic or regular abdominal tightening should be evaluated to rule out preterm labour.
Frequently Asked Questions
Is round ligament pain dangerous for my baby?
No — round ligament pain is a purely mechanical symptom from ligament stretching and has no effect on your baby. The uterus, placenta, and fetus are not involved. It’s painful and sometimes frightening, but it indicates nothing wrong with the pregnancy itself.
Which side is round ligament pain usually on?
Most commonly the right side — the uterus tends to rotate slightly to the right (dextrorotation) as it grows, putting more stretch on the right round ligament. However, it can occur on either side or both simultaneously. Right-sided lower abdominal pain that is severe, constant, or accompanied by other symptoms should always be evaluated to rule out appendicitis.
When does round ligament pain stop?
It typically peaks in the second trimester (weeks 14–24) and often improves as the uterus growth rate stabilizes. Many women find it resolves or becomes much less frequent after week 28. Some experience it intermittently throughout pregnancy. It resolves fully after delivery.
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Related Reading
- 17 weeks pregnant: your baby can hear you now
- Pelvic floor exercises after birth: complete guide
- Best maternity leggings: comfort through all three trimesters
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