Rib Pain
Rib pain is very common in the third trimester as the growing uterus pushes up against the rib cage. Baby kicks to the ribs and diaphragm can cause sharp, brief pain.
Common Causes
- Expanding uterus pushes upward against the lower ribs and diaphragm
- Baby's kicks and movements directly impact the ribs and intercostal muscles
- Rib cage flares outward to accommodate expanding lungs and uterus
- Postural changes and rounded shoulders increase rib cage tension
- The intercostal muscles (between the ribs) stretch and become more sensitive
Remedies That May Help
Good Posture
Sitting tall with shoulders back creates more space in the chest cavity and reduces rib compression.
Change Positions
If baby is lodged against your ribs, changing position (moving, rolling over, or a gentle nudge) often shifts the baby.
Raise Your Arms Overhead
Stretching arms up momentarily creates more space in the torso and can relieve rib pressure.
Avoid Slouching
Slouching compresses the space between the uterus and ribs, worsening discomfort.
Warm Compress
A warm compress on the affected rib area can ease muscle tension.
Sleep Semi-Reclined
Sleeping slightly propped up (not flat) can reduce diaphragm and rib pressure.
When to Call Your Doctor
- Severe rib pain with upper right abdominal pain — possible HELLP syndrome or liver involvement
- Rib pain with headache, swelling, and vision changes — possible preeclampsia
- Sudden, severe chest or rib pain with difficulty breathing
- Rib pain after a trauma or fall
- Pain that doesn't improve with position changes and is persistent and worsening
Frequently Asked Questions
Why does my baby kick me in the ribs so much?
In the third trimester, the baby has less room and their feet often end up tucked under the mother's ribs. Kicks can be very forceful in this position.
Can pregnancy cause rib fractures?
True rib fractures from uterine pressure are extremely rare. Rib pain in pregnancy is almost always soft-tissue and muscle-related.
When does rib pain start in pregnancy?
It most commonly begins in the third trimester (weeks 28–40) as the uterus reaches the level of the rib cage.
Does rib pain go away when the baby drops?
Yes — when the baby's head engages in the pelvis (lightening), upward pressure on the ribs and diaphragm is relieved, often improving rib pain and breathing.
Is upper right rib pain normal in pregnancy?
Mild upper rib discomfort can be normal. However, sharp, persistent pain specifically under the right rib cage can indicate a liver or gallbladder issue and should be evaluated.