Q: My 10-week-old baby started vomiting after breastfeeding. What could be wrong?
- Myeongchan Kim
- Oct 5
- 1 min read
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: Good evening, Doctor. My 10-week-old baby started vomiting after breastfeeding today. It has happened three times so far. She also had one watery stool. She is exclusively breastfed. Her birth weight was 3.2 kg and her current weight is 5.1 kg. What could be the problem?
Answer: Good evening! Vomiting after breastfeeding and one watery stool can happen occasionally, but since it’s occurred three times today, here’s what to consider:
Possible Causes: 1. Overfeeding: Too much milk can cause vomiting. 2. Reflux: Common in babies, especially after feeding. 3. Mild Stomach Upset or Infection: Could cause vomiting and watery stool.
What You Can Do: • Feed smaller amounts more frequently and burp her after feeding. • Keep her upright for 20–30 minutes after feeding. • Monitor for signs of dehydration (fewer wet diapers, dry mouth).
When to See a Doctor: • Vomiting becomes forceful (projectile), as this may indicate pyloric stenosis, which needs urgent evaluation. • More watery stools or fewer than 6 wet diapers a day. • Fever, irritability, or lethargy.
If it persists, see a pediatrician. You’re doing great—keep monitoring! 😊
For extra peace of mind and clear guidance when tracking your child's symptoms, the FeverCoach app is always there to help.




