Why Does My Stomach Hurt, and When Should I See a Doctor?

Stomach pain is one of the most common complaints people have. Almost everyone experiences an ache, cramp or twinge in their belly at some point. In most cases, mild stomach pain is not serious and goes away with simple home care. However, some types of pain can signal a more serious condition that needs medical attention.

Common Causes of Stomach Pain

Stomach pain can come from the stomach itself or from other organs in the belly. Understanding common causes can help you decide if you need to see a doctor.

1. Indigestion and Gas

• Often feels like fullness, bloating or a burning sensation in the upper belly.
• Triggered by overeating, spicy or fatty foods, caffeine or carbonated drinks.
• May improve with antacids or gentle walking.

2. Gastroenteritis (“Stomach Flu”)

• Caused by viruses or bacteria (food poisoning).
• Symptoms include cramping, nausea, vomiting, diarrhea and sometimes fever.
• Usually resolves in 1–3 days with rest, fluids and a bland diet.

3. Food Intolerance and Allergies

• Lactose intolerance can cause bloating, gas and diarrhea after dairy.
• Gluten sensitivity or celiac disease may lead to cramps, diarrhea and fatigue.
• Eliminating the trigger food often eases symptoms.

4. Constipation

• Hard, infrequent stools can stretch the colon and cause cramping.
• Drinking more water, eating fiber-rich foods and staying active often helps.
• Stool softeners or gentle laxatives can provide short-term relief.

5. Acid Reflux (GERD)

• Acid from the stomach backs up into the esophagus, causing a burning pain.
• Often worse after meals or when lying down.
• Lifestyle changes and over-the-counter heartburn medicine usually help.

6. Peptic Ulcer

• A sore in the stomach lining or first part of the small intestine.
• Pain usually feels gnawing or burning, may improve with eating or antacids.
• Needs evaluation by a doctor—untreated ulcers can bleed or perforate.

7. Gallstones

• Hard deposits form in the gallbladder and can block bile flow.
• Sharp pain in the upper right belly, often after a fatty meal.
• May require imaging tests and surgical removal of the gallbladder.

8. Irritable Bowel Syndrome (IBS)

• A chronic condition with abdominal cramping, bloating and changes in bowel habits.
• Stress, certain foods and hormonal changes can trigger flares.
• Managed with diet adjustments, stress reduction and sometimes medication.

9. Menstrual Cramps

• Uterine contractions during your period cause lower belly pain.
• Usually mild to moderate and controlled with over-the-counter pain relievers.
• Severe cramps may need evaluation for endometriosis or fibroids.

10. Urinary Tract Infection (UTI) and Kidney Stones

• UTIs may cause lower belly pain, burning with urination and frequent urges.
• Kidney stones can cause severe, colicky flank pain that radiates to the groin.
• Both require medical treatment: antibiotics for UTIs, possible procedures for stones.

11. Serious Conditions

• Appendicitis: sharp pain starting near the belly button, moving to the lower right side. Often with fever, nausea.
• Pancreatitis: severe upper belly pain that radiates to the back, often with nausea and vomiting.
• Cholecystitis: infected or inflamed gallbladder causing constant upper right pain and fever.
• Inflammatory Bowel Disease (Crohn’s, Ulcerative Colitis): chronic inflammation causing pain, diarrhea, weight loss.

How to Assess Your Pain

Pay attention to these key features:

• Location: Upper, lower, left, right or all over.
• Type of pain: Sharp, dull, cramping, burning or stabbing.
• Timing: After eating, during the night, constant or intermittent.
• Duration: Minutes, hours, days or longer.
• Associated symptoms: Fever, vomiting, diarrhea, blood in stool, weight loss, jaundice (yellowing of skin/eyes).

Red Flags: When to Seek Emergency Care

Most stomach aches are mild and pass in a day or two. But seek immediate medical attention (call 911 or your local emergency number) if you have:

• Severe, sudden belly pain that’s disabling
• Pain with fever over 102°F (39°C)
• Persistent vomiting or vomiting blood
• Black, tarry stools or bright red blood in stool
• Difficulty breathing, chest pain or pressure
• Yellowing of the skin or eyes (jaundice)
• Confusion, dizziness or fainting
• Pain with an injury (for example, after a car accident)

These could signal a life-threatening condition like a perforated ulcer, acute appendicitis, bowel obstruction or internal bleeding.

Managing Mild Stomach Pain at Home

If your pain is mild and you have no red-flag symptoms, try these simple steps:

• Drink clear fluids: water, broth, herbal tea.
• Eat small, bland meals: bananas, rice, applesauce, toast (the “BRAT” diet).
• Avoid spicy, fatty, fried or acidic foods until you feel better.
• Try over-the-counter remedies: antacids, simethicone for gas, bismuth subsalicylate for diarrhea.
• Rest and avoid strenuous activity.
• Apply a warm heating pad to your belly for cramp relief.
• Stay upright after eating to reduce reflux.

If the pain improves within 24–48 hours, you likely don’t need to see a doctor.

When to See Your Doctor

Contact your primary care provider if:

• Pain persists longer than 48 hours despite home care.
• You have mild pain but recurring episodes over weeks to months.
• You can’t keep down fluids for more than one day.
• You notice unexplained weight loss, fatigue or night sweats.
• Your stool or vomit shows blood, or your stool is black and tarry.
• You have new pain during pregnancy or after surgery.

You might also consider doing a free, online symptom check, using the doctor approved Ubie Symptom Checker to help decide if you need further care.

What to Expect at the Doctor’s Office

A medical evaluation may include:

• Detailed history: onset, triggers, associated symptoms.
• Physical exam: checking your abdomen for tenderness, swelling.
• Blood tests: to look for infection, inflammation, liver or pancreas issues.
• Urine test: to rule out a UTI or kidney problem.
• Imaging: ultrasound, X-ray, CT scan or endoscopy for a closer look.
• Specialized tests: stool studies, hydrogen breath test for intolerances, colonoscopy when needed.

Based on findings, your doctor may prescribe medication, refer you to a specialist, or recommend lifestyle and dietary changes.

Key Takeaways

• Stomach pain has many causes, from indigestion and gas to more serious conditions like appendicitis.
• Watch for location, type, timing and associated symptoms to help figure out the likely cause.
• Most mild pains improve with rest, diet changes and over-the-counter remedies.
• Seek emergency care for red-flag symptoms such as severe pain, high fever, bleeding or jaundice.
• If your pain lingers more than 48 hours, recurs frequently or comes with worrying signs, see your doctor.
• Consider a free, online symptom check, using the doctor approved Ubie Symptom Checker for extra guidance on next steps.

Always trust your instincts. If you feel something is seriously wrong, speak to a doctor right away.