Lower Left Abdominal Pain in Women: Possible Causes

By Your Health Magazine Health Information Team

Lower left abdominal pain in a woman can come from the bowel, left ovary or fallopian tube, urinary tract, or abdominal muscles. Common causes include gas, constipation, irritable bowel syndrome, menstrual or ovulation pain, and urinary tract infections. More urgent possibilities include diverticulitis, an ovarian cyst complication, ovarian torsion, pelvic inflammatory disease, kidney stones, or an ectopic pregnancy. The timing, severity, and accompanying symptoms help determine how quickly the pain should be evaluated.

Common Causes of Lower Abdominal Pain on the Left Side

Possible cause	Clues that may accompany the pain
Gas or constipation	Bloating, hard or infrequent stools, and discomfort that may improve after passing stool or gas
Irritable bowel syndrome	Recurring abdominal pain associated with constipation, diarrhea, or both
Diverticulitis	Persistent or worsening lower-left pain, tenderness, fever, nausea, constipation, or diarrhea
Menstrual or ovulation pain	Pain that follows a predictable pattern during the menstrual cycle
Ovarian cyst	One-sided pressure or pain, bloating, pain during sex, or changes in bleeding
Urinary tract infection	Burning with urination, frequent urination, lower-belly pressure, or cloudy or bloody urine
Kidney stone	Sharp pain that may travel from the side or back toward the lower abdomen or groin, sometimes with nausea or blood in the urine

Digestive Causes

Gas and constipation are frequent explanations for soreness in the lower left side because the lower part of the colon passes through this area. Discomfort may be crampy, come and go, or occur with bloating and a change in bowel habits. A stomach or intestinal infection can also cause cramps, diarrhea, nausea, or vomiting.

Irritable bowel syndrome may cause repeated abdominal pain along with constipation, diarrhea, or alternating episodes of both. Symptoms often fluctuate, but new, severe, or steadily worsening pain should not automatically be attributed to IBS.

Diverticulitis occurs when small pouches in the colon become inflamed. According to the National Institute of Diabetes and Digestive and Kidney Diseases’ information on diverticular disease, the pain most often affects the lower-left abdomen and may occur with fever, chills, nausea, vomiting, constipation, or diarrhea. The pain may begin suddenly or worsen over several days and warrants medical evaluation.

Although people sometimes describe the symptom as “gastric pain on the left side,” pain below the belly button is not necessarily coming from the stomach. The colon, urinary tract, reproductive organs, muscles, and abdominal wall can all produce discomfort in this region. Pain involving the anus, bowel movements, or rectal bleeding may have a different set of causes; read more about sharp anal and lower abdominal pain in women.

Gynecologic and Pregnancy-Related Causes

Menstrual cramps can cause aching or cramping across the lower abdomen. Some women also experience brief one-sided discomfort around ovulation. Pain that is unusually severe, occurs outside its typical cycle pattern, or interferes with normal activities should be discussed with a gynecologist or primary care professional.

Other reproductive-system causes include:

Ovarian cysts: Most cause no symptoms, but some produce pressure, bloating, or sharp or dull pain on the affected side. The federal Office on Women’s Health provides more information about ovarian cyst symptoms and evaluation.
Ovarian torsion or a ruptured cyst: Sudden, intense one-sided pain—especially with nausea, vomiting, dizziness, or weakness—requires urgent evaluation.
Endometriosis: Pain may be worse during menstruation or sex and may occur with painful bowel movements, heavy bleeding, or difficulty becoming pregnant.
Pelvic inflammatory disease: This infection of the reproductive organs may cause lower abdominal pain, fever, unusual vaginal discharge, painful sex, burning urination, or bleeding between periods.

An ectopic pregnancy develops outside the uterus and can become life-threatening if it ruptures. Consider pregnancy as a possibility even when contraception is used. One-sided pelvic pain with a missed period, positive pregnancy test, or unusual vaginal bleeding needs prompt medical attention. Sudden severe pain, shoulder pain, dizziness, weakness, or fainting may indicate internal bleeding. The American College of Obstetricians and Gynecologists’ ectopic pregnancy guidance explains the warning signs and diagnostic process.

Urinary and Musculoskeletal Causes

A bladder infection can produce pressure or cramping in the lower abdomen. Burning during urination, urgency, frequent urination, or cloudy, strong-smelling, or bloody urine makes a urinary cause more likely. A clinician can usually check for infection with a urine test. Learn more from the MedlinePlus overview of urinary tract infections.

Kidney stones tend to cause sharp or severe pain that may come in waves and move from the back or side into the lower abdomen or groin. Nausea, vomiting, painful urination, or blood in the urine may occur. Fever or chills with urinary symptoms can signal a more serious infection and requires prompt care.

Sometimes, the explanation is a strained abdominal, hip, or pelvic-floor muscle. Musculoskeletal pain is more likely after lifting, exercise, coughing, or an awkward movement and may worsen when the area is pressed or the body changes position. Persistent pain still deserves assessment because movement-related discomfort can overlap with internal causes.

How a Clinician May Evaluate the Pain

If you find yourself thinking, “My left lower abdomen hurts,” note when it started and what else is happening. A healthcare professional may ask about bowel movements, urinary symptoms, meals, menstrual timing, vaginal bleeding or discharge, pregnancy possibility, medications, and previous abdominal or pelvic conditions.

Depending on the situation, evaluation may include:

An abdominal and, when appropriate, pelvic examination
A pregnancy test
Urine and blood tests
Testing for sexually transmitted infections when relevant
Pelvic or abdominal ultrasound
CT imaging when a bowel disorder, kidney stone, or another abdominal condition is suspected

For mild pain without warning signs, tracking symptoms, staying hydrated, and noting relationships to meals, bowel movements, activity, and the menstrual cycle can provide useful information. Do not assume persistent or escalating pain is simply gas or a normal period symptom.

When to Seek Care

Seek emergency care now for sudden or severe pain, fainting, marked weakness, shoulder pain, a hard or swollen abdomen, difficulty breathing, uncontrolled vomiting, or inability to pass stool or gas. Emergency assessment is also appropriate for pain with heavy vaginal bleeding, vomiting blood, black or bloody stool, or a possible pregnancy accompanied by one-sided pain or bleeding.

Obtain prompt medical evaluation if the pain occurs with fever, chills, painful urination, blood in the urine, unusual vaginal discharge, bleeding between periods, persistent vomiting, or worsening tenderness. Contact a primary care clinician or gynecologist if lower stomach pain on the left side lasts more than a day or two, repeatedly returns, disrupts daily life, or represents a significant change from your usual menstrual or digestive symptoms.