Whats On The Right Side Of Your Stomach?

The right side of your abdomen is not actually your stomach — your stomach sits mostly on the left side. The right side contains your liver, gallbladder, right kidney, part of the pancreas, the appendix, and sections of the large and small intestines. These organs can cause pain or discomfort when they are irritated, infected, or not working properly. Knowing what is on that side helps you understand where symptoms might be coming from.

What organs are on the right side of your abdomen?

The right upper quadrant — from the rib cage down to the belly button level — holds the liver and gallbladder. The liver is the largest solid organ in the body and sits under the right rib cage. The gallbladder is a small pear-shaped organ tucked beneath the liver. Together they handle bile production and storage, which helps digest fats.

Just below the liver, on the right side, part of the pancreas extends into the area. The pancreas makes digestive enzymes and hormones like insulin. The right kidney sits in the back of the upper abdomen, behind the other organs. It filters blood and produces urine.

In the lower right quadrant, you find the appendix — a small tube attached to the large intestine. The appendix has no known essential function but can become inflamed and cause appendicitis. The ascending colon runs up the right side of the abdomen. The small intestine also loops through this area.

What causes pain on the right side of your abdomen?

Pain on the right side can come from many sources. The most common causes involve the gallbladder, appendix, kidney, or liver. Gallstones can block the bile duct and cause sharp pain under the right rib cage, often after a fatty meal. Appendicitis typically starts with pain near the belly button that moves to the lower right side over several hours.

Kidney stones or a kidney infection may cause pain in the back or flank that wraps around to the front right side. Liver problems like hepatitis or fatty liver often cause a dull ache or fullness under the ribs. Less common causes include constipation, gas, muscle strain, or shingles if the rash appears on that side.

Some causes are more serious. An ectopic pregnancy — when a fertilized egg implants outside the uterus — can cause sharp lower right pain in women. Ovarian cysts or pelvic infections also can produce right-sided pain. In men, a hernia or testicular issue can radiate pain to the lower right abdomen.

What is on the right side of your stomach?

This question mixes up two terms. The “stomach” specifically is a J-shaped organ that sits mostly on the left side of your upper abdomen, under the left rib cage. When people ask “what is on the right side of your stomach,” they usually mean the right side of their abdomen. The organs listed above — liver, gallbladder, right kidney, part of the pancreas, appendix, and intestines — are what fill the right side of your belly.

Confusing the word “stomach” with “abdomen” is common and understandable. But it matters because the symptoms from a true stomach problem — like an ulcer or gastritis — cause pain in the upper middle or left side, not the right. If you have pain on the right, it is almost never your stomach itself.

When should you see a doctor for right-sided abdominal pain?

Seek medical attention right away if the pain is sudden and severe, if you cannot keep food down, if you have a fever, or if the pain moves from one spot to another in a pattern. For lower right pain, especially if it started near the belly button and then settled in the lower right, appendicitis is a possibility and needs emergency evaluation.

Other warning signs include jaundice (yellowing of the skin or eyes), vomiting blood, blood in the stool, or unexplained weight loss. If the pain is mild and comes and goes, you might be able to wait and see, but you should call your doctor for guidance. Do not take pain relievers like ibuprofen before seeing a doctor — they can mask symptoms or worsen some conditions.

Pregnant women with right-sided pain should always contact their obstetrician or go to the emergency room. The same applies to anyone with a weakened immune system or chronic liver disease — even mild symptoms can signal a serious problem.

How is right-sided abdominal pain diagnosed?

Doctors start by asking about the pain: when it started, what makes it better or worse, and where exactly it hurts. They will press on different areas of your abdomen to check for tenderness. Blood tests can show signs of infection, inflammation, or liver and kidney problems.

Imaging tests are common. An ultrasound can see gallstones, liver abnormalities, and the appendix. A CT scan provides a more detailed view of the entire abdomen and is often used to diagnose appendicitis or kidney stones. If the doctor suspects a gallbladder attack, a test called a HIDA scan can check how the gallbladder works.

For chronic or recurring pain, doctors might order an endoscopy to look at the stomach and upper intestine, or a colonoscopy to examine the colon. In women, a pelvic exam or ultrasound can rule out ovarian or uterine causes.

Can right-sided pain be something less serious?

Yes. Gas trapped in the colon can cause sharp, crampy pain on the right side that comes and goes. Constipation can create a dull ache, especially in the lower right. Muscle strains from exercise or lifting can also produce localized tenderness. Shingles — a reactivation of the chickenpox virus — can cause a burning pain on one side of the body before the rash appears.

Even something like a pulled intercostal muscle between the ribs can mimic organ pain. The key is to pay attention to accompanying symptoms — fever, vomiting, changes in bowel habits, or urinary symptoms point toward something more than just gas or a muscle pull.

If the pain resolves on its own within a few hours and you have no other symptoms, it is often harmless. But if it comes back or gets worse, see a doctor.

What about the liver and gallbladder specifically?

The liver itself rarely causes pain unless it is swollen from inflammation (hepatitis) or fatty liver disease. When the liver enlarges, it stretches the capsule that surrounds it, causing a dull ache under the right rib cage. Severe liver pain usually signals advanced disease.

The gallbladder is a more common pain source. Gallstones are hard deposits that form in the gallbladder. They can block the duct that drains bile, causing intense pain that lasts 30 minutes to several hours. The pain often strikes after a heavy or fatty meal and may radiate to the right shoulder blade or back. If the gallbladder becomes infected (cholecystitis), the pain becomes constant and you may have a fever.

Removing the gallbladder is one of the most common surgeries in the US. People live normally without it because bile flows directly from the liver into the intestine.

How can you tell if it is appendicitis?

Appendicitis pain typically starts in the middle of the abdomen, near the belly button, and moves to the lower right side within 6 to 24 hours. The pain often worsens when you cough, walk, or press on the area. You may lose your appetite, feel nauseous, or have a low fever.

Not everyone has the classic pattern. In some people, especially pregnant women or older adults, the pain may be less specific. If you have persistent lower right pain and cannot eat, go to the emergency room. A ruptured appendix is a life-threatening infection, and prompt treatment with surgery or antibiotics is essential.