Reflux is when a baby brings up milk, or is sick, during or shortly after feeding.
Symptoms of reflux in babies include bringing up milk, being sick or hiccupping after feeding.
You can usually treat reflux by making some small changes to how you feed your baby, like keeping them upright. Speak to a health visitor for advice.
Reflux happens because the muscles in your baby's food pipe are still developing. They should grow out of it.