Newborn babies can be surprisingly difficult to read. They sleep a lot, make strange noises, feed at irregular times and can go from settled to crying within minutes.
For new parents, this can make it hard to know what is normal and what needs checking. You may find yourself asking whether your baby is too sleepy, feeding enough, crying too much or behaving differently from other babies you know.
In the early weeks, it helps to focus on a few reliable signs rather than trying to interpret every sound or movement. The three things I often ask parents to watch are wet nappies, weight gain, and alertness or behaviour.
These signs do not tell you everything on their own, but together they give a much clearer picture of how your newborn is doing.
What are the best signs that my newborn is well?
The best signs are usually the simple ones.
A newborn who is feeding regularly, producing wet nappies, gaining weight as expected and having periods of normal alertness is generally giving reassuring signals.
This does not mean they will seem content all the time. Newborns cry, grunt, stretch, hiccup, sneeze, wake frequently and sometimes seem unsettled for no obvious reason. Many of these behaviours are part of adjusting to life outside the womb.
Behaviour alone can be misleading. A baby who cries a lot may still be well. A baby who is quiet may still need assessment if they are too sleepy to feed or not producing enough wet nappies.
That is why it helps to look at the pattern, not one moment.
How many wet nappies should a newborn have?
Wet nappies are one of the most useful signs of hydration.
In the first couple of days, babies may only have a small number of wet nappies. As feeding becomes established, wet nappies should become more frequent.
By around day 5 onwards, babies should usually have around 6 wet nappies in 24 hours. Pale or clear urine is reassuring. Very dark urine, or a clear drop in wet nappies, can suggest your baby may not be getting enough fluid.
A rough minimum that should prompt concern is fewer than 3 wet nappies in a day, particularly if this is combined with poor feeding, sleepiness or any change in behaviour.
Nappies are not glamorous, but they are useful. They often give a clearer sign of intake than guessing how much milk your baby has taken.
Is it normal for newborns to lose weight at first?
Yes. Some weight loss in the first few days after birth is normal.
After that, your baby should start to regain weight. Most babies regain their birth weight within the first couple of weeks, although your midwife or health visitor will guide you based on your baby’s individual pattern.
Once feeding is established, the aim is steady growth along their expected centile pattern rather than chasing one exact number. Babies grow at different rates, and weight needs to be interpreted alongside feeding, nappies and general wellbeing.
If your baby loses more weight than expected, does not regain birth weight within the expected timeframe, or is not gaining steadily, your healthcare team may review feeding and check whether any further support is needed.
What does normal alertness look like in a newborn?
Newborns sleep a lot, so alertness may come in short windows. A well newborn will usually have some periods where they wake, respond, open their eyes, show feeding cues or seem interested in their surroundings.
Normal alertness does not mean being awake for long stretches. It means your baby has moments where they seem responsive for their age.
More concerning signs include a baby who is very difficult to wake, unusually floppy, not interested in feeding, much less responsive than usual, or not behaving in a way that feels normal for them.
Parents often notice these changes before anyone else. If your baby seems suddenly different, trust that instinct and ask for advice.
How much should I rely on crying or sleep?
Crying and sleep can be difficult to interpret on their own.
Crying is a newborn’s main way of communicating. It can mean hunger, discomfort, tiredness, needing contact, wind, a nappy change or simply being overwhelmed. Crying does not automatically mean something is wrong.
Sleep is similar. Newborns often sleep in short cycles and wake frequently. Some sleep more in the day than at night. Some make noises, twitch, stretch or move during active sleep.
What matters is whether the overall pattern is reassuring. Is your baby feeding? Are nappies wet? Are they gaining weight? Do they have periods of alertness? Do they settle at least some of the time?
If crying is persistent and inconsolable, or sleepiness is extreme and your baby is difficult to wake, that should be checked.
When should I seek medical advice?
You should seek medical advice if your baby has:
- Poor feeding or refuses feeds
- Fewer wet nappies than expected
- Persistent vomiting, especially green or forceful vomiting
- Breathing difficulties, fast breathing, chest pulling or blue lips
- A temperature of 38°C or above, or a low temperature
- Extreme sleepiness or difficulty waking
- Persistent inconsolable crying
- Yellowing of the skin or eyes that is worsening
- Any sudden change from their usual behaviour
These signs do not always mean something serious is happening, but they do mean your baby should be assessed.
If you are unsure, it is still appropriate to ask for help. New parents often worry about “bothering” healthcare professionals, but uncertainty is part of early parenthood. You are not expected to know everything.
Look for patterns, not perfection
Newborns are not predictable, and they do not behave like small adults. Feeding, crying, nappies and sleep can all vary from day to day.
The most useful signs of wellbeing are wet nappies, weight gain and alertness alongside feeding. If these are reassuring, many newborn behaviours that seem strange are often normal.
If something changes suddenly, or your baby is not feeding, not waking, not passing urine as expected or just does not seem right to you, seek advice. Parents should never feel they are overreacting when they ask for help. Sometimes reassurance is exactly what is needed. Sometimes your instinct helps your baby get assessed at the right time.
About the author
Dr Arindam Das is a Consultant Paediatrician with extensive experience in general paediatrics, paediatric gastroenterology and allergy. He completed his medical and postgraduate paediatric training in India before continuing his specialist training in the UK, including in Cambridge and London. Dr Das has received several academic and professional awards, including the Young Investigator Award from the European Gastroenterology Society in 2015. Alongside his clinical work, he contributes to paediatric education, guideline development and medicine optimisation, with a strong commitment to delivering safe, holistic care for children and young people.
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