When should I see a doctor for an upset stomach?

You should see a doctor for stomach issues if you experience any of these warning signs:

1. Inability to keep liquids down for more than 24 hours, which can lead to dehydration.
2. Fever combined with severe or worsening abdominal pain, which may signal infection or inflammation.
3. Blood in your stool or vomit, which can indicate internal bleeding and requires urgent evaluation.

If any of these symptoms sound familiar—or you're just not sure how serious your situation is—don't wait and worry. Understanding your symptoms early can help you decide whether to rest at home, book a doctor's visit, or seek emergency care. Take a free, instant, online symptom check to get personalized insights based on your symptoms and clear guidance on what to do next.

Reviewed for medical accuracy: 07/14/2026