Indigestion after a stomach bug: what to know

Vomiting or diarrhoea can irritate the upper digestive tract and leave the stomach sensitive when normal eating resumes. Reduced intake, dehydration, and quickly returning to rich foods may add nausea, fullness, or burning. A stomach bug may happen alongside another problem, including acid reflux, gastritis, or a peptic ulcer, so symptoms that do not improve should not automatically be attributed to infection.

Pay attention to whether vomiting or diarrhoea has stopped, whether fluids stay down, and whether pain is central or in one particular area. Record fever, stool changes, food triggers, and any medicines used during the illness.

Take frequent small sips of fluid and return to food gradually with simple portions that feel manageable. Avoid alcohol and foods that clearly worsen burning or nausea until eating is comfortable. Rest, wash hands carefully, and follow local advice if diarrhoea continues. Do not take anti-inflammatory pain medicine or acid treatment repeatedly without advice; a pharmacist can help choose a suitable option, including whether Acid Reflux Medication fits the symptoms.

Arrange a review if indigestion persists after the stomach illness has settled, keeps returning, or prevents normal meals. Provide the illness timeline and a list of medicines, supplements, and recent travel or food exposures if relevant.

Seek urgent care if you cannot keep fluids down, pass very little urine, become faint or confused, develop severe abdominal pain, vomit blood, or pass black or bloody stools. Prompt medical advice is also needed for a high fever, worsening symptoms, or vomiting that continues. These signs can indicate dehydration, bleeding, or an illness needing treatment rather than simple post-infection irritation.

Does the timing fit recovery from the stomach illness? How can I replace fluids safely? Could a medicine be prolonging the irritation? Do I need testing if symptoms continue? Which warning signs should send me to urgent care?