Q: My baby is breathing rapidly, coughing, vomiting, and sounds congested. Could it be pneumonia?
Medically reviewed by Sang Hyun Ahn, MD
Content edited by Myeongchan Kim, MD
This post is a dramatization of a question and answer session experienced by our actual medical reviewers. Please note that this content is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.
Question:
My baby has a severe cold with a stuffy nose and has been breathing through their mouth. Now the cough has worsened, and they threw up milk after coughing hard and are refusing to eat. Their breathing sounds very rattling, congested, and unusually fast. We plan to take them to the clinic tomorrow, but could this be pneumonia? What should I do tonight, and when should we go to the emergency room?

Answer:
Seeing your baby struggle to breathe, cough until they vomit, and refuse feeds can be very alarming for any parent.
Coughing up milk after a coughing fit is often triggered by swallowed mucus irritating the stomach or a strong gag reflex. However, rapid and rattling breathing needs careful assessment. Whether this is pneumonia, bronchiolitis, or a viral upper respiratory infection cannot be determined without an in-person examination. A physician needs to listen to your baby’s lungs with a stethoscope, check their oxygen levels, and possibly perform a chest X-ray.
1. Check for Red Flags (Seek Emergency Care Immediately)
Please assess your baby right now. If you observe any of the following signs, do not wait until tomorrow morning—take your baby to the nearest pediatric emergency room or urgent care center immediately:
Signs of respiratory distress:
Retractions: The skin pulls in tightly between the ribs, under the rib cage, or at the base of the neck with each breath.
Nasal flaring (nostrils widening with each breath) or grunting sounds when exhaling.
Exceptionally fast breathing (more than 60 breaths per minute for babies under 3 months, over 50 for ages 3–12 months, or over 40 for ages 1–5 years while calm/resting).
Changes in color: Lips, tongue, or nail beds appear pale, grayish, or bluish.
Extreme lethargy: Unusually limp, unresponsive, or difficult to wake up.
Signs of significant dehydration: No wet diapers for 8 hours or longer, dry mouth, or crying without tears.
If your baby is not displaying these warning signs, is responsive, makes good eye contact, and can rest comfortably, it is reasonable to monitor them closely overnight and see your pediatrician first thing in the morning.
2. Comfort and Home Care for Tonight
Clear the Nasal Passages: Congestion forces babies to breathe through their mouths, worsening dry coughs and feeding difficulties. Use saline nasal drops or spray followed by gentle bulb suction or a nasal aspirator before feeds and bedtime.
Offer Small, Frequent Fluids: Do not force full feedings. If your baby vomits after coughing, pause for 20 to 30 minutes, then offer small amounts of breast milk or formula (or oral rehydration solution if advised by a doctor) frequently—about every 5 to 10 minutes.
Increase Humidity: Run a cool-mist humidifier in their room (aiming for 40–60% humidity) to help loosen thick mucus. Keep the environment strictly free of smoke and strong odors.
Keep an Upright Position: Holding your baby upright after feedings can reduce reflux and ease breathing. When putting your baby to sleep, always follow safe sleep practices (firm, flat surface on their back); do not place pillows in the crib.
Next Steps and What to Tell the Doctor
When you visit the clinic tomorrow, be prepared to share your baby’s exact age, weight, when the symptoms began, their highest recorded temperature, and how many wet diapers they have had over the last 24 hours. If your baby's breathing quickens, retractions develop, or they become unable to keep fluids down overnight, seek emergency medical care immediately.

For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.





