Note: This article is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Lower right abdominal pain can be harmless, but it can also be urgent. If your pain is severe, sudden, worsening, or comes with fever, vomiting, fainting, pregnancy, blood in stool or urine, chest pain, or a hard/swollen belly, seek medical care right away.
Introduction: Why Lower Right Stomach Pain Deserves Attention
Pain in the lower right of your stomach is one of those symptoms that instantly makes people open a search engine and type with one hand while clutching their abdomen with the other. Sometimes the cause is simple: gas, constipation, a pulled muscle, or that “experimental” burrito that seemed like a great idea at midnight. Other times, lower right abdominal pain can point to conditions that need quick medical attention, including appendicitis, kidney stones, ovarian torsion, ectopic pregnancy, or a serious infection.
The lower right abdomen contains several important structures: the appendix, parts of the small and large intestines, the right ureter, nearby muscles, and in many people, the right ovary and fallopian tube. Because so many organs and tissues live in the same neighborhood, pain in this area can be tricky. Your body is not always great at labeling pain with a neat little arrow that says, “Hello, this is your appendix.” Rude, but true.
This guide explains 10 common reasons you may have pain in the lower right of your stomach, what the pain may feel like, symptoms that can help separate one cause from another, and when it is time to stop Googling and get medical help.
When Lower Right Abdominal Pain Is an Emergency
Before we get into the list, here is the important safety talk. Seek urgent medical care if the pain is sharp, severe, getting worse, or does not improve; if it starts near the belly button and moves to the lower right side; or if it comes with fever, repeated vomiting, dizziness, fainting, confusion, trouble walking upright, a rigid abdomen, black or bloody stool, blood in urine, or severe pain during pregnancy.
For people who could be pregnant, lower abdominal pain with vaginal bleeding, shoulder pain, weakness, or fainting may be a sign of ectopic pregnancy, which can be life-threatening. For people with testicles, sudden groin or testicular pain with lower abdominal pain can signal testicular torsion, another emergency. In plain English: some belly pain is “drink water and rest.” Some belly pain is “put on shoes and go now.”
10 Reasons You Have Pain in the Lower Right of Your Stomach
1. Appendicitis
Appendicitis is the classic cause of lower right abdominal pain, and for good reason. The appendix is a small pouch attached to the large intestine, located in the lower right abdomen. When it becomes blocked and inflamed, pain often begins around the belly button and then moves to the lower right side. As inflammation increases, the pain may become sharper, stronger, and harder to ignore.
Appendicitis pain may worsen when you cough, walk, jump, press the area, or release pressure after pressing. Other symptoms can include nausea, vomiting, loss of appetite, fever, bloating, constipation, or diarrhea. Not every case follows the textbook pattern, which is why doctors take suspected appendicitis seriously.
If untreated, an inflamed appendix can burst and spread infection inside the abdomen. That is not a “sleep it off” situation. If you suspect appendicitis, seek urgent medical care.
2. Gas, Indigestion, or Trapped Air
Gas is not glamorous, but it is one of the most common reasons for stomach discomfort. Swallowed air, carbonated drinks, beans, dairy intolerance, high-fiber foods, artificial sweeteners, and eating too quickly can all lead to bloating and crampy abdominal pain. Sometimes gas collects in one area and creates surprisingly sharp pain, including on the lower right side.
Gas pain often comes and goes. It may improve after passing gas, burping, walking, or having a bowel movement. You may also feel bloated, full, noisy, or mildly nauseated. The good news: gas is usually temporary. The less charming news: it can feel dramatic enough to make you question every life choice since breakfast.
However, gas should not cause high fever, persistent vomiting, severe localized tenderness, fainting, or worsening pain. If those symptoms appear, do not blame lunch too quickly.
3. Constipation
Constipation can cause lower abdominal pain because stool builds up, stretches the intestines, and increases pressure. The pain may feel crampy, dull, full, or sharp. It can appear on either side, including the lower right abdomen. Constipation often comes with fewer than three bowel movements per week, hard or dry stool, straining, bloating, and the frustrating feeling that your body is holding a meeting and refusing to release the minutes.
Common triggers include dehydration, low fiber intake, low physical activity, travel, stress, pregnancy, certain medications, and changes in routine. Mild constipation may improve with fluids, fiber-rich foods, movement, and a regular bathroom schedule. But severe constipation with vomiting, fever, blood in stool, inability to pass gas, major swelling, or intense pain needs medical evaluation.
Constipation may sound simple, but when pain is severe or persistent, doctors may need to rule out obstruction, inflammation, or another underlying condition.
4. Gastroenteritis or Food Poisoning
Gastroenteritis, often called the “stomach flu,” is inflammation of the stomach and intestines caused by viruses, bacteria, or parasites. Food poisoning can create similar symptoms after eating contaminated food. Both can cause abdominal cramps, diarrhea, nausea, vomiting, fever, chills, and fatigue. The pain may be felt across the abdomen or settle more strongly in one area.
Lower right stomach pain with diarrhea can be confusing because infections can irritate the intestines and mimic other conditions. Viral gastroenteritis often improves within a few days with hydration and rest. Food poisoning may also pass quickly, though some bacterial infections can be more serious.
Get medical help if you cannot keep fluids down, have signs of dehydration, bloody diarrhea, high fever, severe localized pain, symptoms lasting more than a few days, or if you are older, pregnant, immunocompromised, or caring for a young child with symptoms.
5. Irritable Bowel Syndrome (IBS)
Irritable bowel syndrome is a gut-brain interaction disorder that can cause repeated abdominal pain along with changes in bowel habits. IBS may involve diarrhea, constipation, or both. Pain may feel crampy and may improve after a bowel movement. Bloating, gas, mucus in stool, and a sense of urgency are also common.
IBS can cause discomfort in different parts of the abdomen, including the lower right side. Stress, certain foods, hormonal changes, disrupted sleep, and gut sensitivity may trigger flares. The condition does not visibly damage the intestines, but that does not mean symptoms are “imaginary.” IBS can be very real, very annoying, and very skilled at appearing right before a meeting, road trip, or first date.
IBS should be diagnosed by a healthcare professional, especially if symptoms are new. Red flags such as unexplained weight loss, blood in stool, fever, anemia, nighttime diarrhea, or symptoms starting later in life require further evaluation.
6. Crohn’s Disease or Inflammatory Bowel Disease
Crohn’s disease is a type of inflammatory bowel disease that can affect any part of the digestive tract. It commonly involves the end of the small intestine, called the ileum, which is located near the lower right abdomen. That is why Crohn’s disease can cause lower right stomach pain, cramping, diarrhea, fatigue, fever, reduced appetite, weight loss, and sometimes blood in stool.
Unlike IBS, inflammatory bowel disease causes inflammation and can lead to ulcers, narrowing of the intestines, abscesses, or other complications. Symptoms may come and go in flares. Some people have mild symptoms; others have pain that disrupts school, work, meals, and daily life.
If lower right abdominal pain is ongoing, especially with chronic diarrhea, blood in stool, weight loss, fever, or fatigue, it is worth seeing a doctor. Early diagnosis can help prevent complications and improve quality of life.
7. Kidney Stones or Urinary Tract Problems
Kidney stones are hard mineral deposits that can form in the kidneys and travel into the ureter, the tube that carries urine to the bladder. A stone on the right side can cause intense pain in the back, side, lower abdomen, or groin. The pain may come in waves and may be severe enough to make sitting still feel impossible. Other symptoms can include nausea, vomiting, blood in urine, frequent urination, burning with urination, and cloudy or foul-smelling urine.
A urinary tract infection can also cause lower abdominal pressure or cramping, often with burning while urinating, frequent urination, urgency, cloudy urine, blood in urine, or strong-smelling urine. If infection spreads to the kidney, symptoms may include fever, chills, nausea, vomiting, and back or side pain.
Seek prompt medical care for severe pain, fever, chills, vomiting, blood in urine, pregnancy, or signs of kidney infection. Kidney stones and UTIs can overlap in symptoms, and both deserve proper diagnosis.
8. Inguinal Hernia
An inguinal hernia happens when tissue, sometimes part of the intestine, pushes through a weak area in the lower abdominal wall near the groin. It may cause lower abdominal or groin pain on one side, including the right side. You may notice a bulge near the pubic bone that becomes more obvious when standing, coughing, lifting, or straining.
The pain may feel like pressure, burning, aching, or pulling. Some hernias are mild at first, while others become more painful over time. Heavy lifting, chronic coughing, constipation, pregnancy, previous surgery, and natural weakness in the abdominal wall can contribute.
A hernia needs urgent care if the bulge becomes very painful, cannot be pushed back in, turns red or purple, or comes with nausea, vomiting, fever, or inability to pass stool or gas. These signs may suggest incarceration or strangulation, where trapped tissue loses blood supply.
9. Ovarian Cysts or Ovarian Torsion
For people with ovaries, lower right abdominal pain may come from the right ovary. Ovarian cysts are fluid-filled sacs that are often harmless and may go away on their own. But larger cysts can cause dull or sharp lower abdominal pain, bloating, pelvic pressure, pain during sex, or changes in menstrual bleeding.
A ruptured cyst can cause sudden sharp pain. Ovarian torsion, where the ovary twists and cuts off its blood supply, can cause sudden, severe, one-sided pelvic or lower abdominal pain, often with nausea and vomiting. Torsion is a medical emergency because quick treatment may be needed to protect the ovary.
Because appendicitis and ovarian problems can feel similar, diagnosis often requires a medical exam and imaging. Do not try to win a guessing game against your pelvis. It has home-field advantage.
10. Ectopic Pregnancy
An ectopic pregnancy happens when a fertilized egg implants outside the uterus, most often in a fallopian tube. It can cause mild to severe pain in the lower abdomen or pelvis, often on one side. Other symptoms may include vaginal bleeding, low back pain, dizziness, weakness, shoulder pain, fainting, or rectal pressure.
Ectopic pregnancy can become life-threatening if the tube ruptures and causes internal bleeding. Anyone who could be pregnant and has lower abdominal pain, especially with bleeding or dizziness, should seek medical care immediately. This is true even if contraception was used or pregnancy seems unlikely.
A pregnancy test, pelvic exam, blood tests, and ultrasound may be used to diagnose the problem. The key message is simple: lower right abdominal pain plus possible pregnancy deserves fast attention.
Other Possible Causes Worth Knowing
The 10 causes above are common or important, but they are not the entire list. Lower right stomach pain can also be related to ovulation pain, menstrual cramps, endometriosis, pelvic inflammatory disease, abdominal muscle strain, diverticulitis, gallbladder problems, bowel obstruction, prostatitis, or testicular torsion.
Abdominal muscle strain is especially easy to overlook. If the pain began after exercise, lifting, coughing, sports, or a sudden twist, and it worsens when you move, sneeze, laugh, or tighten your core, the abdominal wall may be involved. Muscle strains can cause localized tenderness and soreness, but they should not cause fever, vomiting, blood in stool, or urinary symptoms.
Diverticulitis usually causes lower left abdominal pain, but pain can appear elsewhere depending on anatomy. It may cause fever, nausea, constipation, diarrhea, and severe abdominal tenderness. In short, bodies are complicated. They did not come with a dashboard light, which feels like a design flaw.
How Doctors Figure Out the Cause
When you see a healthcare professional for lower right abdominal pain, they may ask when the pain started, where it began, whether it moved, what makes it better or worse, and whether you have fever, vomiting, diarrhea, constipation, urinary symptoms, menstrual changes, pregnancy possibility, recent injuries, or new medications.
A physical exam may include checking the abdomen for tenderness, swelling, guarding, rebound pain, and hernias. Depending on symptoms, testing may include blood work, urine testing, pregnancy testing, stool tests, ultrasound, CT scan, or pelvic exam. The goal is not just to name the pain, but to separate “watch and manage” from “treat today.”
What You Can Do While Monitoring Mild Pain
If the pain is mild, not worsening, and you do not have warning signs, simple steps may help. Sip water, rest, avoid heavy meals, try gentle walking for gas, use a warm compress, and pay attention to bowel movements. Avoid taking laxatives, anti-diarrhea medicines, or strong pain relievers without guidance if symptoms are severe or unclear, because they can sometimes mask important signs.
Keep track of the pain pattern. Does it come in waves? Move from the belly button to the lower right side? Improve after passing gas? Worsen with urination? Happen after meals? Appear with your menstrual cycle? These clues can help a clinician make the right call.
Experience Section: What Lower Right Stomach Pain Can Feel Like in Real Life
One of the most frustrating things about lower right stomach pain is that it rarely arrives with a clear introduction. It does not say, “Good afternoon, I am gas,” or “Hello, I am appendicitis, please proceed to urgent care.” Instead, it shows up as a pinch, cramp, ache, stab, pressure, or weird pulling sensation that makes you suddenly aware of every organ you learned about in biology class.
Many people first notice lower right abdominal pain while doing ordinary things: sitting at a desk, driving, cooking dinner, exercising, or trying to sleep. Mild gas pain may feel like a trapped bubble that shifts around and improves after walking or passing gas. Constipation may feel like pressure, fullness, and cramping, often with bloating that makes jeans feel personally disrespectful. A muscle strain may feel sharp when you sit up, cough, laugh, or roll over in bed, especially after a workout or heavy lifting.
More concerning pain often behaves differently. Appendicitis may start as vague discomfort near the belly button, then become more focused in the lower right abdomen. The pain may intensify over hours and make movement unpleasant. People often describe not wanting to jump, cough, or ride over bumps in a car. Kidney stone pain may come in waves and feel severe, restless, and hard to position away from. It may travel toward the groin and come with nausea or urinary symptoms.
For people with ovaries, lower right pain can create extra uncertainty because gynecologic and digestive symptoms overlap. Ovulation pain may be brief and cycle-related, while an ovarian cyst may cause dull pressure or sudden sharp pain if it ruptures. Ovarian torsion pain is typically sudden and severe and may come with nausea or vomiting. Ectopic pregnancy can start subtly, which is why possible pregnancy plus one-sided pain should never be brushed aside.
In real life, people often delay care because they hope the pain will pass, worry they are overreacting, or feel embarrassed. But doctors would rather evaluate pain early than see a preventable emergency later. You are not being dramatic for paying attention to severe or unusual abdominal pain. Your abdomen is a busy neighborhood, and when one resident starts banging pots and pans, it is reasonable to investigate.
A practical experience-based rule is to look at the whole picture. Mild cramping after a heavy meal that improves with gas or a bowel movement is different from sharp pain that localizes, worsens, or comes with fever and vomiting. Pain linked to urination points toward the urinary tract. Pain linked to movement may suggest muscle strain. Pain linked to bowel changes may suggest constipation, IBS, infection, or inflammatory bowel disease. Pain linked to pregnancy, vaginal bleeding, testicular pain, fainting, or severe nausea deserves urgent attention.
The best approach is calm observation plus smart action. Do not panic over every twinge, but do not ignore red flags. Write down timing, location, severity, related symptoms, and anything that helped or worsened the pain. That small note can make a medical visit much more productive. Your future self, sitting in the exam room trying to remember whether the pain started before or after lunch, will be grateful.
Conclusion: Listen to the Location, But Watch the Pattern
Pain in the lower right of your stomach can come from many causes, including appendicitis, gas, constipation, gastroenteritis, IBS, Crohn’s disease, kidney stones, UTIs, hernias, ovarian cysts, ovarian torsion, or ectopic pregnancy. The location matters, but the pattern matters even more. Sudden severe pain, worsening pain, fever, vomiting, fainting, pregnancy, blood, urinary symptoms, or a rigid abdomen should be treated as warning signs.
If your pain is mild and improves quickly, it may be something simple. If it is persistent, intense, unusual, or paired with other symptoms, get medical care. Your lower right abdomen may be small, but it has a lot going on. When it speaks loudly, it is worth listening.
