Lower Abdominal Pain: Causes and When to Seek Care

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Lower Abdominal Pain: Causes and When to Seek Care

By Your Health Magazine Health Information Team

Lower stomach pain can come from the intestines, bladder, urinary tract, reproductive organs, abdominal muscles, or groin. Common causes include gas, constipation, irritable bowel syndrome, menstrual cramps, and urinary tract infections. However, sudden, severe, worsening, or one-sided pain may require urgent evaluation for conditions such as appendicitis, a kidney stone, ovarian torsion, or an ectopic pregnancy.

What the Location and Pattern of Pain May Suggest

The “stomach” is only one organ in the abdomen and is located higher than many people realize. Pains in the lower abdomen usually arise below the belly button, where several organs are close together. Location can provide clues, but it cannot confirm a diagnosis. The broader MedlinePlus guide to abdominal pain explains why symptoms, timing, and associated changes all matter.

Common Causes of Lower Stomach Aches

Digestive causes

Gas and constipation commonly produce pressure, bloating, or cramping that may improve after passing gas or having a bowel movement. A stomach or intestinal infection can cause cramps along with diarrhea, nausea, vomiting, or fever.

Irritable bowel syndrome may cause recurring abdominal pain, bloating, constipation, diarrhea, or alternating bowel habits. IBS can be uncomfortable, but symptoms that are new, severe, or accompanied by bleeding, fever, unexplained weight loss, or persistent vomiting should not automatically be attributed to IBS.

Diverticulitis often causes steady pain on the lower left side, sometimes with fever, nausea, constipation, or diarrhea. Appendicitis classically begins near the belly button and moves to the lower right, although symptoms are not always typical. Pain may worsen over several hours or with coughing, deep breathing, or movement. The National Institute of Diabetes and Digestive and Kidney Diseases recommends immediate care for suspected appendicitis symptoms.

Urinary causes

A bladder infection can cause discomfort low in the center of the abdomen, burning during urination, frequent urges to urinate, or cloudy, bloody, or strong-smelling urine. Prompt evaluation is appropriate because an untreated infection can spread to the kidneys. Review the typical symptoms of a bladder infection from the National Institute of Diabetes and Digestive and Kidney Diseases.

Kidney stones may produce sharp pain in the side, back, lower abdomen, or groin. The pain can come in waves and may occur with nausea, vomiting, urinary urgency, painful urination, or blood in the urine.

Reproductive and pelvic causes

Menstrual cramps and ovulation can cause temporary lower abdominal or pelvic discomfort. Other possibilities include ovarian cysts, endometriosis, pelvic inflammatory disease, uterine fibroids, or ovarian torsion. Warning signs include intense one-sided pain, fever, vomiting, unusual vaginal discharge, pain during sex, or bleeding outside the expected menstrual period.

Anyone who could be pregnant should take lower abdominal pain seriously, particularly when it occurs with vaginal bleeding, shoulder pain, dizziness, weakness, or fainting. These symptoms may indicate an ectopic pregnancy and require immediate medical evaluation.

Muscle, groin, and testicular causes

An abdominal muscle strain may follow lifting, exercise, coughing, or an abrupt movement and usually hurts more when the muscle is used. A hernia can cause pain, pressure, or a bulge in the groin or lower abdomen. Sudden testicular pain or swelling, with or without lower abdominal pain, is an emergency because the testicle’s blood supply may be affected.

Clues to Track Before Seeking Care

If you are wondering, “Why does the bottom of my tummy hurt?” note the details rather than relying on pain location alone:

• When the pain began and whether it started suddenly or gradually
• Whether it is sharp, burning, cramping, aching, or pressure-like
• Whether it is constant, comes in waves, or is getting worse
• Whether eating, movement, urination, a bowel movement, sex, or menstruation changes it
• Any fever, nausea, vomiting, bloating, diarrhea, constipation, bleeding, discharge, urinary symptoms, or groin swelling
• The date of the last menstrual period and whether pregnancy is possible
• Recent injuries, travel, dietary changes, surgeries, or new medications

When to Seek Care

Go to an emergency department or call 911 for:

• Sudden, severe, rapidly worsening, or unbearable abdominal pain
• A hard, rigid, swollen, or extremely tender abdomen
• Fainting, confusion, severe weakness, difficulty breathing, or chest or shoulder pain
• Vomiting blood, passing bloody stool, or passing black, tar-like stool
• Inability to pass stool or gas, especially with vomiting or abdominal swelling
• Severe pain after an abdominal injury
• Possible pregnancy with significant pain, bleeding, shoulder pain, dizziness, or fainting
• Sudden testicular pain or swelling

Contact a healthcare professional promptly for pain that continues beyond 24 to 48 hours, becomes more frequent, or interferes with eating, sleeping, or normal activity. Same-day evaluation is also appropriate for lower-right pain, repeated vomiting, dehydration, fever, painful urination, blood in the urine, unusual vaginal discharge or bleeding, or back and side pain with urinary symptoms.

A primary care clinician or urgent care center can evaluate many cases. Depending on the findings, follow-up may involve a gastroenterologist, urologist, or obstetrician-gynecologist.

How Lower Abdominal Pain Is Evaluated

A clinician may ask about the pain pattern, bowel and urinary changes, menstrual history, pregnancy possibility, medications, surgeries, and prior episodes. Evaluation may include an abdominal or pelvic examination, urine testing, a pregnancy test when relevant, blood or stool tests, ultrasound, or a CT scan.

Imaging results must be interpreted together with symptoms and examination findings. For example, an ultrasound or CT report may mention pelvic fluid; learn more about what free fluid in the pelvis can mean and why its significance depends on the clinical context.

For mild, short-lived discomfort without warning signs, rest, hydration, and simple meals may be reasonable while monitoring symptoms. Avoid using leftover antibiotics or taking laxatives for severe, unexplained pain. A pharmacist or healthcare professional can help determine whether an over-the-counter pain reliever is appropriate based on medical conditions, pregnancy status, allergies, and other medications. This information is for general education and cannot identify the cause of an individual’s pain.