October 2026

Right-Side Stomach Pain: Causes and When to Seek Care

By Your Health Magazine Health Information Team

Pain or discomfort on the right side of your stomach area can come from the digestive tract, gallbladder, appendix, kidneys, abdominal muscles, or reproductive organs. Mild gas or constipation may improve on its own, but sudden, severe, worsening, or persistent right-sided pain—especially with fever, vomiting, bleeding, jaundice, fainting, or pregnancy—needs prompt medical evaluation.

Where Is the Pain?

What many people call “stomach pain” is actually abdominal pain. The abdomen extends from below the chest to the groin and contains several organs. The location and pattern of the pain can provide useful clues, although symptoms alone cannot confirm a diagnosis.

Location or pattern	Possible causes	Important accompanying symptoms
Upper right, beneath the ribs	Gallstones, gallbladder inflammation, liver problems, indigestion, muscle strain	Pain after eating, nausea, fever, pain toward the back or right shoulder, jaundice
Lower right	Appendicitis, constipation, intestinal inflammation, hernia, ovarian or pregnancy-related conditions	Worsening localized pain, loss of appetite, fever, vomiting, pelvic symptoms
Right side or back, sometimes moving toward the groin	Kidney stone, kidney infection, urinary tract problem	Wave-like pain, painful urination, blood in urine, fever, chills
Pain near the abdominal surface	Muscle strain, abdominal wall injury, hernia	Pain with movement, lifting, coughing, or pressing the area

Common Causes of Right-Side Abdominal Pain

Gas, constipation, or intestinal irritation

Gas and constipation can cause pressure, cramps, bloating, and pain on either side of the abdomen. The discomfort may improve after passing gas or having a bowel movement. Irritable bowel syndrome can also cause repeated abdominal pain associated with diarrhea, constipation, or both. Persistent pain, rectal bleeding, fever, unexplained weight loss, or an inability to pass gas should not be assumed to be a routine digestive problem.

Gallbladder problems

Gallstones can block a bile duct and cause steady or severe pain in the upper-right abdomen, often after a heavy meal. The pain may last several hours and may occur with nausea or vomiting. The National Institute of Diabetes and Digestive and Kidney Diseases explains the typical symptoms of gallstones and gallbladder attacks.

Fever, chills, yellow skin or eyes, dark urine, pale stools, or prolonged pain can indicate inflammation or blockage requiring prompt care. Imaging reports sometimes describe the gallbladder as contracted; this does not automatically mean there is a disease. Learn more about what a contracted gallbladder may mean for your health.

Appendicitis

Appendicitis commonly causes pain that starts near the belly button and moves to the lower-right abdomen. It may worsen over several hours or become more painful with walking, coughing, movement, or deep breathing. Loss of appetite, nausea, vomiting, fever, or abdominal swelling may occur, but not everyone has the classic pattern. Because appendicitis is a medical emergency, seek immediate evaluation for symptoms that suggest it. The NIH provides additional information about appendicitis symptoms and when to get help.

Kidney stones or kidney infection

A kidney stone may cause sharp pain in the right side, back, lower abdomen, or groin. The pain can come and go in waves and may be accompanied by nausea, vomiting, painful urination, urinary urgency, or blood in the urine. Review the NIH’s description of kidney stone symptoms.

A kidney infection may cause side or back pain along with fever, chills, nausea, and frequent or painful urination. These symptoms require timely medical care because the infection may become serious.

Muscles and hernias

An abdominal muscle strain can follow exercise, lifting, forceful coughing, or an awkward movement. Pain is often close to the surface and becomes more noticeable when the muscle tightens. A hernia may create a tender bulge that becomes more obvious with standing, lifting, or coughing. Severe pain, vomiting, or a bulge that becomes firm, discolored, or cannot be gently reduced requires emergency assessment.

Reproductive and pregnancy-related causes

Lower-right abdominal or pelvic pain can arise from ovulation, an ovarian cyst, endometriosis, pelvic infection, or ovarian torsion. Sudden severe one-sided pelvic pain, particularly with nausea or vomiting, needs urgent evaluation.

If pregnancy is possible, one-sided pain with vaginal bleeding, shoulder pain, dizziness, weakness, or fainting may indicate an ectopic pregnancy with internal bleeding. Seek emergency care rather than waiting for the symptoms to resolve.

When to Seek Care

Call 911 or go to an emergency department now if right-sided abdominal pain is accompanied by:

Sudden, severe, or rapidly worsening pain
A hard, swollen, or very tender abdomen
Fainting, confusion, severe weakness, or trouble breathing
Vomiting blood, bloody stool, or black, tarry stool
Inability to pass stool or gas, especially with vomiting
Chest, neck, or shoulder pain
Possible pregnancy with severe one-sided pain, bleeding, dizziness, or shoulder pain
Severe lower-right pain suggesting appendicitis

Seek same-day medical care for pain with fever or chills, repeated vomiting, jaundice, painful or bloody urination, persistent loss of appetite, or pain that becomes focused in one location. Contact a healthcare professional if milder discomfort does not improve within 24 to 48 hours, keeps returning, or interferes with eating, sleeping, or normal activities.

What to Do While Monitoring Mild Discomfort

If the discomfort is mild, brief, and not accompanied by warning signs, you can:

Rest and avoid strenuous lifting or exercise.
Sip water or other clear fluids, particularly if you have nausea or diarrhea.
Choose small, simple meals and avoid alcohol or rich, greasy foods that worsen symptoms.
Note where the pain is located, when it began, whether it moves, and what makes it better or worse.
Record associated symptoms such as fever, bowel changes, urinary problems, vomiting, or vaginal bleeding.

Do not rely on home care when pain is severe, worsening, or associated with warning signs. Before using pain relievers, laxatives, or other medicines for unexplained abdominal pain, ask a healthcare professional or pharmacist what is appropriate for you.

How Right-Side Pain Is Evaluated

A healthcare professional may ask about the exact location, severity, timing, meals, bowel movements, urination, menstrual history, pregnancy possibility, medications, injuries, and previous episodes. Depending on the findings, evaluation may include blood tests, urine testing, a pregnancy test, ultrasound, or CT imaging.

The intensity of abdominal pain does not always reveal how serious its cause is. For additional reliable consumer information, explore the National Library of Medicine’s MedlinePlus health topics. A clinician should evaluate unexplained right-sided pain that persists, recurs, or occurs with other concerning symptoms.