Most of the time, a newborn who’s crying, snuffly, or unsettled is completely fine — and the last thing you need is to second-guess every sound. But a few signs mean get help now, don’t wait, and knowing them takes the guesswork out of the frightening moments. This is the one list worth keeping in your head. Above all: a young baby can go downhill fast, so if your instinct says something is wrong, trust it and act. It is never wrong to get a newborn checked.

Call emergency services straight away

Call your local emergency number (112 across much of Europe, or your own) immediately if your baby:

These can’t wait for an appointment. Call, and follow the operator’s instructions — they will guide you through anything that needs doing.

Fever in a young baby is always urgent

A temperature of 38°C (100.4°F) or higher in a baby under three months needs urgent medical assessment, even if they otherwise seem fine. Young babies can become seriously unwell very quickly, so this is not one to wait out — get them seen the same day, and seek emergency help if they also seem very unwell, unusually sleepy, or are breathing differently.

Get them seen the same day

Contact a doctor urgently — the same day — if your baby has any of these:

Call emergency services nowGet seen urgently / same day
Trouble breathing, blue/pale, floppy or unresponsiveFeeding much less, or far fewer wet nappies
A fit, or choking and unable to breathePersistent vomiting, or green or blood-stained vomit
A rash that doesn’t fade under a pressed glassJaundice that’s deepening or starts in the first 24 hours
Choking, or any sudden severe changeA high-pitched or weak cry unlike their normal one

Also worth an urgent call: a bulging or sunken soft spot (fontanelle), being very sleepy or impossible to settle, feeling cold and not warming up, or simply seeming “not right” to you.

Prevent what you can

Real emergencies are rare, and a few everyday habits lower the risk: follow the safe-sleep rules (on the back, in a clear cot), feed safely (paced, winded, never a propped bottle), keep small objects and loose bedding away, and don’t let your baby overheat. Knowing what’s normal — including why babies cry and what’s normal on their skin — also helps you spot quickly when something isn’t.

Learn infant first aid — properly

You cannot learn CPR or what to do for choking from an article, and you shouldn’t try. A short, hands-on paediatric first-aid course — often run by health services or organisations like the Red Cross or St John Ambulance — teaches you exactly what to do if a baby chokes or stops breathing. It’s one of the most useful things a new parent (and any grandparent or carer) can do, and the confidence it gives you is worth everything in a real emergency. Book one if you can. Until then, in an emergency, call your emergency number — the operator will talk you through it.

Trust your instinct

You know your baby better than anyone, and “I just feel something is wrong” is a completely valid reason to seek help. Doctors and nurses would always rather see a well baby than miss a sick one — you are never wasting their time, and you should never feel you have to be sure before you call.

The short version

Keep your emergency number to hand, learn the can’t-wait signs above, remember that a fever in a baby under three months is always urgent, prevent what you can, and book a first-aid course. Most of all, trust your gut — getting a newborn checked is never the wrong call, and it lets you get back to the ordinary rhythm of the first weeks with one less worry.

This is general information, not medical advice, and it is not a substitute for professional assessment or a hands-on first-aid course. In any emergency, or if you are worried, contact your local emergency services, your doctor, or your health service straight away — and follow their guidance.