One of the biggest surprises for many new parents is how much of life with a newborn revolves around feeding, sleeping and… poo!
During pregnancy, much of the focus is understandably on labour and birth. However, the days and weeks after your baby arrives can bring just as many questions. Understanding what is normal can help you feel more confident as you get to know your new baby.
One topic that midwives, health visitors and neonatal teams pay close attention to is your baby’s nappies. Whilst it might not be the most glamorous part of parenting, your baby’s poo can tell us a lot about their health, feeding and hydration.
What Is Meconium?
Meconium is your baby’s first poo. It is usually passed within the first 24 hours after birth and looks very different from the nappies you’ll be changing later on.
Meconium is typically:
- Dark green or black
- Thick and sticky, almost like tar
- Difficult to wipe away
- Usually odourless or only mildly scented
Passing meconium is an important sign that your baby’s digestive system is working as expected.
What Is Meconium Made Of?
Although your baby has not yet had milk feeds, their digestive system has been active during pregnancy.
While in the womb, babies swallow amniotic fluid and naturally shed skin cells, lanugo (the fine hair covering their body during pregnancy), mucus and other materials. These collect in the bowel and form meconium.
After birth, passing meconium helps clear the bowel ready for digesting breast milk, formula milk or a combination of both.
When Should My Baby Pass Meconium?
Most babies pass their first meconium poo within the first 24 hours after birth.
In fact, it may happen during those precious first hours of skin-to-skin contact, so don’t be surprised if your baby’s first poo arrives before their first nappy!
Your maternity team will usually ask whether your baby has passed meconium, as this helps them assess your baby’s wellbeing.
How Do I Clean Meconium?
The good news is that whilst meconium is sticky, it doesn’t last long.
To clean your baby’s skin:
- Use warm water and cotton wool or fragrance-free baby wipes if preferred.
- Gently clean the skin without excessive rubbing.
- Pay particular attention to skin folds.
- Pat the skin dry before putting on a fresh nappy.
Current NHS and health visiting advice supports using either cotton wool and water or appropriately designed fragrance-free baby wipes for healthy full-term babies. The most important thing is keeping your baby’s skin clean and dry.
How Many Poos Are Normal?
There is a wide range of normal when it comes to newborn poo.
During the first week, many babies will have at least 2–3 bowel movements a day, although some may poo more frequently.
By around days 3–4, the colour and consistency will start to change as feeding becomes established.
Health professionals often look for a transition through three stages:
Days 1–2: Meconium
Black, green-black or very dark sticky poo.
Days 3–4: Transitional Poo
Green, brown or yellow-green stools that are becoming less sticky.
Day 5 Onwards
Breastfed babies:
- Yellow or mustard coloured
- Soft or loose
- May contain small seed-like flecks
Formula-fed babies:
- Yellow-brown, green-brown or tan coloured
- Slightly firmer in consistency
Both are normal.
What’s Normal? Newborn Poo Colour Guide
It’s completely normal for your baby’s poo to change colour and consistency during the first few days after birth. As feeding becomes established, you’ll usually see a gradual transition from dark, sticky meconium to lighter stools. Remember these are just guide – every baby is different!
| Age | What You Might See | What It Means |
| Day 1–2 | 🖤 Black or very dark green, sticky poo | Meconium – your baby’s first poo. This is completely normal and shows their bowels are starting to clear. |
| Day 3–4 | 💚 Green, brown-green or yellow-green poo | Transitional stools. This is a reassuring sign that milk is moving through your baby’s digestive system. |
| Day 5 onwards (breastfed babies) | 💛 Yellow or mustard-coloured poo, often loose with small seed-like flecks | A sign that feeding is becoming established. Breastfed babies may poo after every feed or much less often – both can be normal. |
| Day 5 onwards (formula-fed babies) | 🤎 Yellow-brown, tan or green-brown poo | Formula-fed babies’ poo is often slightly firmer and darker than breastfed babies’ poo. |
Why Do Health Professionals Ask About Nappies?
Your baby’s nappies provide useful information about how feeding is going. Frequent wet and dirty nappies are reassuring signs that your baby is receiving enough milk.
This is one reason why midwives, health visitors and infant feeding teams often ask about both urine and stool output during the early days.
When Should I Seek Advice?
Most changes in newborn poo are completely normal, but it’s important to seek advice if:
Your baby has not passed meconium within 24 hours of birth
This should always be assessed by a healthcare professional.
Your baby seems unwell
Seek medical advice if your baby:
- Is unusually sleepy or difficult to wake
- Is feeding poorly
- Has a fever
- Appears dehydrated
- Has a swollen tummy
You notice white, pale or chalk-coloured stools
Pale or clay-coloured poo should always be assessed promptly, as it can occasionally indicate a liver or bile duct problem.
You see blood in your baby’s poo
Whilst there can be harmless explanations, blood should always be checked by a healthcare professional.
Remember, every baby is different. Looking at the overall picture – feeding, wet nappies, weight gain and your baby’s behaviour is much more important than focusing on any single nappy. If something doesn’t feel right, seek advice. Your midwife, health visitor, GP or NHS 111 are there to help.
Remember
Newborn nappies might not be the part of parenting you spent most time thinking about during pregnancy, but they can provide valuable clues about your baby’s health and feeding.
The good news is that most changes in colour, frequency and consistency are completely normal as your baby’s digestive system adapts to life outside the womb.
Our Free Complete Antenatal Course includes a dedicated section on the postnatal period, newborn feeding, caring for your baby and understanding what is normal in those early days and weeks.
References
- NHS. Your baby’s first poo (meconium) and newborn nappies.
- NHS. How to tell if your baby is getting enough milk.
- Institute of Health Visiting (iHV). Understanding newborn feeding and output.
- NICE Guideline NG194. Postnatal care.
- UNICEF UK Baby Friendly Initiative (BFI). Caring for your newborn baby.
- National Childbirth Trust (NCT). Newborn poo: what’s normal?
- PIF TICK Framework. Principles for trustworthy health information.