Your baby has been born. You are home. And now the question that every new parent asks within the first 48 hours: why are they crying?
Here is the answer that will save you a lot of guessing. Newborns only communicate three things. They are hungry. They are tired. Or they need a nappy change. That is the entire list. For the first few months of your baby's life, almost every cry, every grizzle, every unsettled moment traces back to one of those three needs.
Once you learn to read the signs for each one, you stop reacting to crying and start getting ahead of it. That is the difference between a baby who is mostly calm and a baby who seems to cry constantly. The baby is the same. The timing is different.
The fourth trimester (and why it matters)
Before we get into the specifics, it helps to understand what your baby is going through.
The first 12 weeks after birth are sometimes called the fourth trimester. Your baby spent nine months in a warm, dark, noisy, snug environment where every need was met instantly. Now they are in a bright, open, quiet room and they have no idea what is happening.
Everything your newborn does in those first weeks is an attempt to recreate what they had in the womb. They want warmth, closeness, movement, and white noise. They want to be held. They want to feed frequently. This is not clingy behaviour. It is survival instinct, and it is completely normal. If you are still figuring out what to buy, our new parent shopping guide compares prices across Australian retailers on the essentials.
Understanding this context makes the three cues easier to read. Your baby is not being difficult. They are adjusting to a world that feels nothing like the one they just left.
If you are still pregnant and thinking about what those first moments will look like, your birth plan is a good place to start. Preferences like skin-to-skin contact, delayed cord clamping, and immediate feeding all set the stage for how your baby transitions into the fourth trimester. BirthGuide walks you through these decisions so your partner and care team know exactly what you want.
Cue 1: Hunger
Most new parents wait for their baby to cry before offering a feed. By that point, your baby has been trying to tell you they are hungry for several minutes. Crying is a late hunger cue. It is the equivalent of shouting. And feeding a crying baby is harder because they are stressed, their tongue is up, and latching becomes a battle.
The early signs are subtle but consistent. Your baby will start bringing their hands to their mouth. They will turn their head side to side, rooting, looking for a breast or bottle. Their lips will move, almost like they are practising sucking. They might make small sounds, soft grunts or squeaks, before any real fussing starts.
If you catch these early cues, feeding is calmer for everyone. The latch is easier. Your baby feeds more efficiently. You are not trying to calm a screaming infant before you can even start.
How often will they feed?
In the first few weeks, expect to feed roughly every 2 to 3 hours, sometimes more. This is measured from the start of one feed to the start of the next, not from the end. So if a feed starts at 10am and takes 40 minutes, the next one might begin around 12 to 12:30pm. That gap can feel very short. It is.
Cluster feeding is normal.
In the first few weeks, your baby will have periods where they want to feed constantly. Sometimes every 30 to 45 minutes for several hours in a row, usually in the evening. This is called cluster feeding. It does not mean your milk supply is low. It does not mean something is wrong. It is how babies build milk supply and it usually settles by about six weeks.
If you are breastfeeding and worried about supply, count nappies instead of clock-watching. By day five, your baby should be producing at least six wet nappies in 24 hours. That is the most reliable indicator that they are getting enough.
Your birth plan can include your feeding preferences, whether you plan to breastfeed, formula feed, or use a combination. Having this written down means the midwives on shift know your plan without you having to explain it repeatedly at 3am. BirthGuide includes feeding preferences in your birth plan and flags them on your partner's labour cheat sheet too.
Cue 2: Tiredness
This is the one that catches most new parents off guard. You would think a tired baby would just fall asleep. They do the opposite. An overtired baby fights sleep harder, cries more, and becomes almost impossible to settle.
The key concept is the wake window. This is the amount of time your baby can comfortably stay awake between naps before they become overtired. For newborns, this window is shockingly short.
Wake windows by age
From birth to about 6 weeks, your baby can stay awake for roughly 45 to 60 minutes. That includes feeding time. So if a feed takes 30 minutes, you have maybe 15 to 30 minutes before they need to sleep again.
From 6 to 12 weeks, the window stretches slightly to about 60 to 90 minutes.
From 3 to 4 months, you are looking at roughly 75 to 120 minutes.
These are averages. Your baby might run shorter or longer. But the pattern holds: newborns need far more sleep than most parents expect. A newborn in the first six weeks might sleep 14 to 17 hours in a 24-hour period, broken into short bursts.
Tired signs to watch for
Your baby's tired cues happen in stages, just like hunger cues. The early ones are easy to miss if you are not looking.
First, you will notice a zoned-out stare. Your baby looks away from you, from toys, from stimulation. They are disengaging. Then come the yawns, the jerky arm and leg movements, and clenching of fists. Rubbing eyes and ears comes next, though this is more common from about 8 weeks onwards.
If you miss those, the late signs arrive. Arching backwards, frantic crying, and the classic overtired meltdown where nothing works. At this point, settling them takes much longer and the nap is often shorter.
The practical hack: set a timer.
When your baby wakes from a nap, note the time. If your baby is under six weeks old, start your wind-down routine about 40 minutes later. Dim the lights, reduce noise, swaddle if that is your approach, and start gentle rocking or patting. You are aiming to begin the process before the window closes, not after. Not sure which swaddle to go with? We compared the most popular options in our shopping guide.
This one tip alone can transform your day. Parents who track wake windows consistently report calmer babies, longer naps, and less crying. It feels overly simple. It works.
Cue 3: Nappy
This one is more straightforward, but there are a few things worth knowing beyond "check if it is wet."
The first week is its own thing.
In the first 24 to 48 hours, your baby will pass meconium. It is thick, dark green, almost black, and sticky. This is normal. Over the next few days, the stool transitions to a greenish brown, then to a mustard yellow colour with a seedy texture if breastfeeding, or a slightly firmer tan colour if formula feeding. This transition tells you that your baby's gut is working and they are digesting milk.
Nappy output tells you about feeding.
By day five, you are looking for at least six wet nappies and three or more dirty nappies in 24 hours for a breastfed baby. Formula-fed babies may have fewer dirty nappies but should still hit the wet nappy count. If you are not hitting those numbers, talk to your midwife.
Some parents track nappies on their phone. Others use a simple tally on a piece of paper stuck to the wall. It does not matter how you track it, but tracking it for the first two weeks gives you confidence that feeding is going well.
When to call your midwife or GP.
Most nappy changes are unremarkable. But there are a few things to watch for: blood in the stool (small streaks can be normal but should be mentioned), white or very pale stool (always mention this), diarrhoea lasting more than 24 hours, or significantly fewer wet nappies than usual. None of these are necessarily emergencies, but they are worth a phone call.
Beyond the triad: skin-to-skin
If the triad covers what your baby needs, skin-to-skin is how you deliver it.
Holding your baby against your bare chest helps regulate their temperature, steadies their heart rate, calms their breathing, and makes feeding easier. It works for both parents. It is not just a birth day thing. Skin-to-skin in the first weeks at home, during feeds, after a bath, or when your baby is unsettled, can be one of your most effective tools.
This is one reason why your birth plan matters beyond the delivery room. If your birth preferences include immediate skin-to-skin and your partner knows this is the plan, that first hour after birth sets the tone for everything that follows. Your BirthGuide birth plan includes these preferences and your partner's cheat sheet flags them as priority actions.
When something feels wrong
Most of what your baby does in the first weeks will trace back to the triad. But there are moments when something falls outside those three categories and your instincts tell you it is different.
Trust that instinct. Call your midwife, your GP, or your hospital's postnatal line if you notice any of the following: a temperature above 38 degrees, unusual lethargy where your baby is hard to wake for feeds, refusing multiple feeds in a row, a high-pitched or unusual cry that sounds different from their normal fussing, yellowing of the skin or eyes beyond what your midwife has said is normal, or fewer wet nappies than expected.
You will never be judged for calling. Midwives and GPs would rather hear from you ten times about nothing than miss the one time it matters.
The pattern that makes it click
Here is what a typical cycle looks like for a newborn under six weeks:
Baby wakes. You feed them, watching for early hunger cues so you catch it before crying. The feed takes 20 to 40 minutes. You wind them, check the nappy, and maybe get 10 to 20 minutes of quiet awake time. Then you start watching for tired signs. About 45 to 60 minutes after they woke up, you begin settling them for the next nap. They sleep for 20 minutes to 2 hours. Then it starts again.
That is the rhythm. Feed, awake time, sleep. Repeat. It sounds relentless because it is. But once you see the pattern, you stop wondering what your baby wants. You already know.
And if you are still preparing for birth, thinking through your preferences now makes those first hours and days easier. Your partner reads the plan. Your midwife sees your preferences. You focus on your baby instead of explaining yourself.
FAQ
How do I know if my baby is hungry or tired?
Timing is your best clue. If your baby just woke up and is showing cues like rooting or hand-to-mouth, they are almost certainly hungry. If they have been awake for 45 to 60 minutes and are getting fussy, tiredness is more likely. The cues can look similar, but the context makes them clearer.
How long should a newborn be awake between naps?
For the first six weeks, roughly 45 to 60 minutes including feed time. This gradually increases to 60 to 90 minutes between 6 and 12 weeks, and 75 to 120 minutes from 3 to 4 months.
Is it normal for my newborn to feed every hour?
Yes, particularly in the evenings during the first few weeks. This is called cluster feeding and it helps establish milk supply. As long as your baby is producing enough wet and dirty nappies, frequent feeding is normal and expected.
When should I worry about my newborn's crying?
If the cry sounds different from their usual fussing, particularly if it is high-pitched or inconsolable, or if it is accompanied by fever, lethargy, refusal to feed, or changes in nappy output, call your midwife or GP. Otherwise, cycling through the triad (hungry, tired, nappy) will usually identify the cause.
What is the fourth trimester?
The first 12 weeks after birth, when your baby is adjusting from the womb to the outside world. During this period they crave warmth, closeness, and frequent feeding. Understanding this helps explain why newborns seem so demanding and why responding to their cues promptly is exactly the right approach.
Should both parents do skin-to-skin?
Yes. Skin-to-skin works for any parent or carer. It regulates your baby's temperature, calms their breathing and heart rate, and supports bonding. Partners who do regular skin-to-skin in the early weeks often feel more confident and connected with their baby.
