Why Does My Stomach Hurt?

Causes, Locations & When to See a Doctor

Stomach pain is usually caused by digestive issues like gas, indigestion, or constipation — most of which resolve on their own within a day or two. But abdominal pain can sometimes signal something more serious, and knowing what to look for can help you decide whether to rest at home or call a doctor.

Your abdomen is home to a large number of organs: your stomach, liver, pancreas, gallbladder, small intestine, large intestine, kidneys, bladder, and appendix, among others.

Pain in this region doesn’t always come from where you think. It may not even originate in your digestive system at all. Understanding the type of pain you’re experiencing — where it is, how it feels, and how long it lasts — is the first step to figuring out what’s going on.

This guide breaks down the most common causes of stomach pain, explains what different pain locations might mean, and outlines exactly when you need medical attention.

Common Causes of Stomach Pain

Most stomach aches fall into one of a few well-known categories. Here’s a look at the most frequent culprits.

Indigestion

Indigestion typically causes a feeling of fullness, bloating, or a burning sensation in the upper abdomen — usually after eating. It’s extremely common and is often triggered by eating too quickly, consuming fatty or spicy foods, or drinking too much coffee or alcohol.

Symptoms often include:

Feeling uncomfortably full after meals
Burning or aching in the upper stomach
Nausea or mild heartburn

Most cases of indigestion resolve on their own. Antacids can help speed things along.

Gas and Bloating

Trapped gas is one of the most common causes of stomach discomfort. It can create sharp, cramp-like pains that shift around the abdomen. Though it can feel alarming, gas pain is rarely dangerous.

Common triggers include:

Eating too fast and swallowing air
Beans, lentils, cruciferous vegetables, and carbonated drinks
Lactose intolerance or food sensitivities

Passing gas or having a bowel movement usually provides relief.

Constipation

When stool moves too slowly through the colon, it can cause significant discomfort. Constipation typically produces a dull, heavy ache across the lower abdomen, and you may notice visible bloating or a feeling of fullness that doesn’t go away.

Gastroenteritis (Stomach Bug)

A stomach bug — often caused by a virus or bacteria — brings on sudden cramping, nausea, diarrhea, and sometimes vomiting. Symptoms usually appear quickly and resolve within a few days without treatment. Staying well-hydrated is the main priority.

Muscle Strain

Not all abdominal pain comes from inside. If you’ve recently done intense exercise, lifted something heavy, or coughed a lot, you might have strained the muscles in your abdominal wall. This type of pain tends to worsen when you move, stretch, or press on the area.

Location Matters: What Your Stomach Pain Location Could Mean

One of the most useful clues to the cause of your pain is where you feel it. Doctors often divide the abdomen into four quadrants — upper right, upper left, lower right, and lower left — because different organs live in each region.

Upper Right Abdomen

Pain here is commonly associated with:

Gallstones — intense pain that may radiate to the right shoulder or back
Liver problems, including hepatitis
Kidney stones — sharp, severe pain that often travels toward the groin

Upper Left Abdomen

The stomach and pancreas sit in this region. Pain here may point to:

Gastritis or stomach ulcers — a burning sensation that can feel like hunger
Pancreatitis — severe, sharp pain that sometimes radiates to the back, often accompanied by nausea, vomiting, and fever
Acid reflux (GERD) — a burning sensation in the upper stomach or chest

It’s worth noting that ulcers are less common than many people assume. According to gastroenterologist Dr. James L. Buxbaum of Keck Medicine of USC, the most frequent causes of ulcers are NSAIDs (like ibuprofen or naproxen) and a bacteria called H. pylori — not stress, as is widely believed.

Lower Right Abdomen

This is the location of the appendix. Sudden, sharp pain in the lower right that gets progressively worse should be taken seriously, as it may indicate appendicitis — a medical emergency.

Lower Left Abdomen

Pain in this area is frequently linked to:

Diverticulitis — inflammation of small pouches in the colon, common in older adults
Irritable bowel syndrome (IBS) — often accompanied by diarrhea or constipation and bloating

Central Abdomen

Pain around the belly button may suggest:

A small bowel issue
Early appendicitis (before it shifts to the lower right)
In males, testicular pain can also radiate to this area

Chronic vs. Acute Stomach Pain

Not all stomach pain works the same way. The duration and pattern of your pain can tell you a lot.

Acute Pain

Acute pain comes on suddenly and lasts less than a day or two. It’s often caused by:

A stomach bug or food poisoning
Gas or indigestion
A pulled muscle
Appendicitis or gallstones (serious causes that need urgent care)

Acute pain that is severe, worsening, or accompanied by other symptoms like fever or vomiting blood requires immediate medical attention.

Chronic or Recurring Pain

Pain that lasts longer than two weeks, or keeps coming back, is considered chronic. Common causes include:

Irritable Bowel Syndrome (IBS) — IBS-related pain often worsens after meals or during stress. It may involve diarrhea, constipation, or both, but does not cause bleeding or unintended weight loss, according to Johns Hopkins Medicine.
Inflammatory Bowel Disease (IBD) — Includes Crohn’s disease and ulcerative colitis, which involve inflammation of the digestive tract
Acid reflux (GERD) — A chronic condition where stomach acid backs up into the esophagus
Food intolerances — Lactose intolerance or celiac disease can cause ongoing cramping, bloating, and diarrhea when trigger foods are consumed

Recurring abdominal pain should always be discussed with a doctor, even if each individual episode feels manageable.

How to Relieve Mild Stomach Pain at Home

For mild stomach aches linked to digestion, there are several things you can do to ease the discomfort before reaching for medication.

Rest your gut:

Stick to bland, easy-to-digest foods — think crackers, rice, bananas, or toast
Avoid coffee, alcohol, and fatty or spicy foods until you feel better

Stay hydrated:

Sip water or a hydration formula, especially if you’ve had diarrhea or vomiting
Clear fluids help your digestive system recover

Apply gentle heat:

Place a warm water bottle or heat pad on your abdomen
A warm bath can also help relax abdominal muscles

Try gentle remedies:

Ginger may help ease nausea and indigestion
Peppermint can help relax the intestinal muscles
Over-the-counter antacids can provide relief for acid-related pain
Acetaminophen (Tylenol) can help with general pain — but avoid ibuprofen or aspirin unless directed by a doctor, as these can worsen certain types of stomach pain

Get some rest:

Physical activity can aggravate stomach pain, especially if it involves the abdominal muscles
Allow your body time to recover

When to See a Doctor for Stomach Pain

Most stomach aches are harmless and will pass on their own. However, some symptoms should not be ignored.

See a doctor if you have:

Stomach pain that gets significantly worse or doesn’t improve after a day or two
Pain or bloating that keeps coming back
Unexplained weight loss
Difficulty swallowing food
Diarrhea that persists for more than a few days
Pain accompanied by a fever that doesn’t go away

Seek emergency care immediately if you experience:

Sudden, severe abdominal pain
Pain when you press or touch your stomach
Vomiting blood, or vomit that looks like coffee grounds
Black, tarry, or bloody stools
Inability to urinate, pass gas, or have a bowel movement
Chest pain or shortness of breath alongside abdominal pain
Severe abdominal pain during pregnancy
Signs of collapse or inability to stay conscious

According to Cleveland Clinic, the level of pain you feel doesn’t always reflect how serious the condition is. Some life-threatening conditions can feel mild, while common digestive issues can be incredibly painful. If you’re unsure, it’s always better to get checked.

FAQs About Stomach Pain

Can stress cause stomach pain?
Yes. The gut and brain are closely connected through a network sometimes called the gut-brain axis. Stress, anxiety, and difficult emotions can trigger or worsen digestive issues, including IBS symptoms, cramping, and nausea.

Is it normal to have stomach pain after eating?
Mild discomfort after a large meal is common. But regular pain after eating may point to indigestion, food intolerances, acid reflux, or an ulcer. If it’s happening frequently, it’s worth speaking to a doctor.

What does appendicitis pain feel like?
Appendicitis typically starts as a dull ache around the belly button, then moves to sharp, intensifying pain in the lower right abdomen. It is often accompanied by fever, nausea, and loss of appetite. It requires emergency medical care.

How long is too long for stomach pain?
Most mild stomach aches resolve within 24 to 48 hours. Pain that lasts longer than a couple of days, keeps coming back, or is getting worse rather than better should be evaluated by a doctor.

Can kidney stones cause stomach pain?
Yes. Kidney stones can cause severe pain that radiates from the back or side of the abdomen down toward the groin. The pain often comes in waves and may be accompanied by nausea and painful urination.

Taking Care of Your Digestive Health

Stomach pain is common, and the majority of cases have a simple, manageable cause. Paying attention to where the pain is, what it feels like, and how long it lasts can give you — and your doctor — important clues about what’s behind it.

For general digestive health, a few consistent habits go a long way: eating smaller meals more often, staying hydrated, getting regular physical activity, limiting alcohol, and maintaining a fiber-rich diet. If you have a known condition like lactose intolerance or acid reflux, avoiding your personal trigger foods can prevent a lot of unnecessary discomfort.

When symptoms are mild and familiar, home remedies are often enough. But if something feels different, severe, or persistent, don’t wait it out. Your body is worth listening to.