One of the hardest parts of the newborn stage is not knowing what’s normal. Every little sound, color change, and weird poop sends most first time parents into a spiral of googling that usually ends with more anxiety than answers. The result is either calling the pediatrician constantly over things that are completely fine, or talking yourself out of calling when something actually does warrant attention.
This post won’t replace your pediatrician’s advice. But it will give you a clearer starting point for knowing when to pick up the phone, when to head to urgent care, and when to go straight to the emergency room.
When to call your pediatrician during office hours
These are things that need attention but aren’t emergencies. Call and describe what you’re seeing and let the office guide you from there.
Your baby has a fever but is under 3 months old. Any fever in a baby under 3 months is taken seriously. A rectal temperature of 100.4 degrees Fahrenheit or higher in a newborn means call immediately, not wait and see. Fever in older babies is handled differently but in the newborn period it always warrants a call.
Your baby isn’t gaining weight or seems to be losing weight after the first two weeks. Some weight loss in the first few days is normal. By two weeks most babies should be back to their birth weight. If feeding feels like a struggle and your baby seems lethargic or isn’t producing enough wet diapers, call.
Your baby has a rash you can’t identify. Most newborn rashes are harmless, baby acne, milia, and erythema toxicum are all common and benign. But a rash that looks like small purple or red pinpricks that don’t fade when you press on them, or any rash accompanied by fever, needs to be seen.
Yellowing skin or eyes beyond the first two weeks. Jaundice in the first few days is common and usually resolves on its own. If it’s persisting or worsening after two weeks, or if your baby seems very sleepy and difficult to wake for feeds, call your doctor.
You’re worried about your baby’s belly button or circumcision site. Some redness and crusting is normal as these heal. Increasing redness, swelling, discharge, or a foul smell means call.
When to go to urgent care
Your baby has a fever and is between 3 and 6 months old. In this age range a fever of 100.4 or higher still needs same day evaluation, but your pediatrician’s office or an urgent care clinic is usually appropriate unless your baby seems very unwell.
Your baby has been vomiting forcefully and repeatedly. Spitting up is normal. Projectile vomiting, especially after every feed, is not. This can be a sign of pyloric stenosis, a condition that’s treatable but needs diagnosis.
Your baby has persistent diarrhea with signs of dehydration. Fewer wet diapers than usual, dry mouth, sunken fontanelle, or no tears when crying are signs worth taking seriously.
Your baby has an unusual cry that doesn’t sound like their normal cry and you can’t settle them. You know your baby. If something sounds or feels different, trust that instinct.
The Tiny Human Toolkit includes an ER vs urgent care guide that helps you work through exactly this kind of decision in the moment when you’re panicked and can’t think straight. Having it on your phone before you need it is the whole point.
When to go straight to the emergency room
These are situations where you don’t call ahead, you don’t wait for the office to open, and you don’t spend time googling. You go.
Your baby is having trouble breathing. Nostrils flaring, ribs visible with each breath, a bluish tint around the lips or fingertips, or breathing that seems very rapid or labored. Go immediately.
Your baby is unresponsive or very difficult to wake. Newborns sleep a lot but they should rouse for feeds and respond to stimulation. If your baby is limp, won’t wake up, or seems not to know you’re there, that’s an emergency.
Your baby has a seizure. Any rhythmic jerking, stiffening, or unusual eye movements that you can’t explain warrants an immediate ER visit.
Your baby has a sunken or bulging fontanelle combined with other symptoms. The soft spot on your baby’s head can normally appear slightly sunken when they’re upright or slightly full when they’re crying. A consistently sunken fontanelle alongside poor feeding can indicate dehydration. A bulging fontanelle when your baby is calm and upright can indicate pressure and needs immediate evaluation.
Your baby has blood in their stool and seems unwell. Small streaks of blood from an anal fissure can happen and are usually minor. Blood combined with vomiting, a distended belly, or a baby who seems in pain is a different situation entirely.
Your baby has swallowed something or you suspect poisoning of any kind. Call Poison Control immediately at 1-800-222-1222 and follow their guidance. They will tell you whether an ER visit is needed.
The thing worth remembering
Pediatricians expect calls from new parents. That is part of the job. If you’re genuinely worried, call. The worst outcome of an unnecessary call is that you feel a little silly and get reassurance. The worst outcome of not calling when you should have is much harder to sit with.
The Tiny Human Toolkit has a red flags reference card you can keep on your phone for exactly these moments when you need a fast answer and can’t trust yourself to think clearly under pressure. It’s not a replacement for medical care, but it gives you a starting point when your brain has gone blank at midnight and you just need something to help you decide what to do next.
Trust your gut. You know your baby better than anyone.