Aches & Pains
Rib Pain in Pregnancy
Common in the third trimester as your bump pushes up under your ribs — usually eased by posture, but some patterns need urgent checking.
Written and fact-checked by the ParentVibes editorial team against WHO, NHS, ACOG and peer-reviewed guidance. Not yet reviewed by a named clinician.
Quick facts
- Typical timing
- Third trimester, as baby grows upward
- Usual location
- Under one or both sides of the ribcage
- Usual cause
- Uterus pressing on ribs, baby's position and kicks
- Helped by
- Posture changes, stretching, changing position
- See a doctor if
- Right-sided pain with headache, vision changes or breathlessness
As your baby and uterus grow upward in the third trimester, it's common to feel pressure, aching or sharp jabs under your ribs — sometimes from the sheer size of your bump, sometimes from a well-aimed kick. For most people this is uncomfortable rather than concerning, and it often eases a little once your baby's head engages lower into your pelvis closer to birth.
Occasionally, though, rib pain — particularly on the right side — can be linked to a more serious condition, so it's worth knowing the difference. This guide covers why rib pain happens, what helps, and the warning signs that mean you should get checked promptly.
What is pregnancy rib pain?
Rib pain in pregnancy is aching, pressure, or sharp discomfort felt under or around your ribcage, most common in the third trimester as your uterus expands upward and there's less room for your other organs. It can be felt on one side or both, and is often worse when your baby is in a certain position, after eating a large meal, or with particularly strong movements or kicks.
For most people it's a mechanical discomfort caused simply by lack of space, and it may ease somewhat once your baby's head 'engages' — moves down into your pelvis — in the weeks before labour, especially in a first pregnancy. However, persistent pain under your ribs on the right side, especially together with a headache, visual disturbances or swelling, can be a sign of pre-eclampsia or a related liver condition and needs to be checked promptly.
Right-sided rib pain deserves attention
Pain under your ribs on the right — sometimes described as feeling like heartburn or a stitch that won't go — combined with a headache, blurred vision, or swelling of your face, hands or feet, should be assessed urgently. It can be an early sign of pre-eclampsia.
What causes rib pain in pregnancy?
Most rib pain in later pregnancy has a straightforward mechanical explanation, though a few causes need medical review.
Your growing uterus
By the third trimester, your uterus extends up towards your ribcage, leaving less room for your lungs, stomach and ribs to move freely, which can cause pressure and aching.
Your baby's position and movements
A baby lying with their bottom or feet up towards your ribs can cause persistent pressure or sharp jabs with each kick or stretch.
Postural changes
As your bump grows, your ribcage may flare outward and your posture shifts, which can strain the muscles and joints between your ribs.
Heartburn and indigestion
Reflux, common in later pregnancy, can cause a burning discomfort that's sometimes felt as pain under the ribs or breastbone.
Pre-eclampsia (less common but important)
In some cases, pain under the right ribs is caused by swelling of the liver related to pre-eclampsia, a pregnancy condition involving high blood pressure — this needs prompt medical assessment.
More noticeable if…
- This is your first pregnancy and your baby hasn't yet engaged
- You're carrying twins or more
- Your baby is in a breech or awkward position
- You have a shorter torso, leaving less room to expand
When rib pain is normal
Mechanical rib discomfort is very common in the third trimester. These features are usually reassuring:
- Aching or pressure under your ribs that varies with your baby's position and movements.
- Sharp, brief jabs when your baby kicks or stretches, settling once they move.
- Discomfort that eases somewhat when you change position, stretch, or your baby's head engages.
- No headache, visual changes, swelling or breathlessness alongside it, and you otherwise feel well.
| Usually normal rib pain | Needs medical attention | |
|---|---|---|
| Location | Varies with baby's position, either side | Persistent, high up on the right side |
| Other symptoms | None — you feel otherwise well | Headache, blurred vision, swelling, or feeling unwell |
| Breathing | Comfortable, other than pressure | Sudden breathlessness or chest pain |
It may ease as birth gets closer
Once your baby's head engages into your pelvis — often a few weeks before labour in first pregnancies — many people notice rib pain eases as pressure shifts lower.
Warning signs — get medical help now
Contact your doctor or midwife urgently, or go to your nearest emergency department, if your rib pain comes with:
Seek urgent medical care if you have
- A severe headache that doesn't go away, or feels different from a normal headache.
- Vision changes — blurring, flashing lights, or seeing spots.
- Sudden swelling of your face, hands or feet.
- Sudden breathlessness or chest pain — this needs emergency assessment immediately.
- Persistent, severe pain under your ribs on the right side that doesn't ease.
- Feeling generally unwell, nauseous or being sick alongside the pain.
If your baby's movements feel reduced or different, contact your maternity unit the same day.
Right-sided rib pain with headache or vision changes
This combination can signal pre-eclampsia, a serious condition that needs urgent blood pressure and blood tests. Contact your maternity unit straight away rather than waiting.
Self-care & home remedies
Simple posture and positioning changes can ease everyday rib discomfort.
Posture & positioning
- Sit up straight and avoid slumping, which compresses your ribcage further.
- Try leaning back slightly or use cushions to support your back and open up your ribcage.
- Raise your arms overhead gently for a stretch that can create a little more space.
Eating habits
- Eat smaller, more frequent meals rather than large ones to reduce pressure and reflux.
- Avoid lying down straight after eating.
- Cut back on spicy, fatty or acidic foods if they trigger heartburn-related discomfort.
Movement & rest
- Gentle stretching or prenatal yoga can create more space and ease tension.
- A warm compress on the sore area can soothe aching muscles.
- Try changing position — sitting, standing or lying on your side — to shift where your baby is pressing.
Know your blood pressure numbers
Attend your antenatal appointments so your blood pressure and urine are checked regularly — this is how pre-eclampsia is usually picked up early, often before you'd notice symptoms yourself.
When to consult a doctor
Book a non-urgent appointment, or call your midwife the same day, if:
- Rib pain is persistent and not clearly linked to your baby's movements or position.
- You're finding it hard to eat, breathe comfortably, or sleep because of the pain.
- You have ongoing heartburn that isn't responding to simple measures.
- You're unsure whether your symptoms are 'normal' rib discomfort or something to flag.
- Pain is on the right side and doesn't ease, even without other symptoms — it's always worth mentioning.
Track your symptoms
Logging your rib pain alongside any headaches, swelling or vision changes helps you and your midwife spot patterns early.
Open the Pregnancy TrackerFrequently asked questions
Why do my ribs hurt so much in the third trimester?
As your baby and uterus grow upward, there's less room under your ribcage, and your baby's position or kicks can add direct pressure. This mechanical discomfort is very common and usually harmless.
Is rib pain a sign of pre-eclampsia?
It can be, particularly if the pain is on the right side and comes with a headache, blurred vision, sudden swelling or feeling unwell. On its own, ordinary rib pain from your growing bump is not a sign of pre-eclampsia — but always get any combination of these symptoms checked.
Will rib pain go away before I give birth?
For many people, especially in a first pregnancy, rib pain eases once your baby's head engages into your pelvis in the weeks before labour, as the pressure shifts lower.
Can my baby's kicks really hurt my ribs?
Yes — a well-placed kick or stretch from your baby, especially if they're lying with their feet up towards your ribcage, can cause a sharp, brief jab that's completely normal.
What positions help ease rib pain?
Sitting upright with good back support, gently stretching your arms overhead, and changing position regularly can all help create a little more space and ease pressure.
When should I go to hospital for rib pain?
Seek urgent care for rib pain with a severe headache, vision changes, sudden swelling, breathlessness or chest pain, or if the pain is severe and persistent on the right side. These combinations need prompt assessment.
Your next steps
Track your pregnancy
Log symptoms week by week, get personalised tips, and see how your pregnancy is progressing.
Open Pregnancy TrackerPregnancy week-by-week
Follow your baby's growth and your body's changes from week 1 to 40 in plain language.
Explore the guideFind a gynaecologist
Have a personal concern? Book with a trusted obstetrician or gynaecologist near you.
Find a doctorRelated pregnancy symptoms
Helpful resources
Sources
- NHS — Pregnancy: common symptoms & concerns
- ACOG — Pregnancy resources (American College of Obstetricians and Gynecologists)
- WHO — Maternal health & pregnancy care
- NHS — Pre-eclampsia
- Tommy's — Rib pain in pregnancy
Next review due: 6 January 2027.
Medical disclaimer
This page is general information about a common pregnancy symptom and does not replace personal medical advice. Every pregnancy is different. If you have severe pain, heavy bleeding, a bad headache with vision changes, reduced or absent baby movements, breathing difficulty, fever, or you feel something is seriously wrong, contact your doctor or midwife or go to your nearest emergency department straight away. When in doubt, always get checked — it is never a waste of anyone's time.
Read our Medical Disclaimer, Editorial Policy and Medical Review Policy.