Round ligament pain during pregnancy

By trimester

Weeks 1–13

1st trimester

Round ligament pain is uncommon this early because your uterus is still small and low in the pelvis. Sharp cramping in the first trimester more often comes from normal uterine growth or digestion, but mention any pain that is severe, one-sided, or does not ease up to your provider.

Weeks 14–27

2nd trimester

This is when round ligament pain most often starts, as your uterus grows quickly and stretches these ligaments. Standing up fast, rolling over in bed, sneezing, or laughing can trigger a quick, sharp jab on one or both sides that eases within a minute or two.

Weeks 28–birth

3rd trimester

The pain can continue or come back now as your uterus keeps growing and the baby moves more. Because you are closer to delivery, pay attention if the feeling changes: pain that turns into a rhythmic tightening, spreads to your back, or will not ease with rest is worth a call to your provider.

What does the evidence show for round ligament pain?

• The round ligaments are two rope-like bands that anchor your uterus on each side, and they get longer and thicker as your uterus grows, which is exactly what makes them stretch and ache. 1
• This stretching pain usually starts in the second trimester and feels sharp or pulling on one or both sides of your lower belly or groin, often triggered by standing up fast, rolling over, coughing, or laughing. 1
• It is considered a normal, physiologic part of pregnancy, and slowing your movements down, resting on your side, and holding a warm compress on the sore spot usually calms it within minutes. 1
• Emergency medicine reviews already group round ligament pain with the common, benign causes of pregnancy belly pain, distinct from true emergencies like ectopic pregnancy that need urgent care. 2
• A published case is a good reminder to get checked when something feels off: one pregnant woman's ongoing lower right-side pain was first thought to be round ligament strain, but imaging found appendicitis once the pain kept building instead of easing. 3
• Appendicitis in pregnancy classically starts as generalized or periumbilical pain that migrates to the right lower quadrant, accompanied by anorexia and nausea with or without vomiting, with fever in about 40 percent of cases, findings absent from ordinary round ligament stretching. 4

When should I call my provider about round ligament pain?

Round ligament pain is typically brief, eases with rest, and does not come with fever, nausea, or loss of appetite. Pain that instead starts near the belly button and settles into steady, worsening pain in the lower right side, especially with fever, appetite loss, or nausea and vomiting, follows the pattern of appendicitis rather than a ligament stretch and needs same-day evaluation. Tenderness that gets worse when the area is pressed and then released, or pain that keeps building over hours instead of fading, are also reasons to be seen rather than to wait it out. Trust your read on your own body. If something feels off beyond the list above, please consult your healthcare provider rather than waiting it out.