Lower Abdominal Pain: Common Causes Explained

Lower abdominal pain in women can be caused by menstrual cramps, ovulation, constipation, urinary tract infections, ovarian cysts or endometriosis. Other causes, including appendicitis, ectopic pregnancy and ovarian torsion, may require urgent treatment. The location, timing and accompanying symptoms help guide assessment, but pain location alone cannot identify the cause. Lower abdominal pain is discomfort below the belly button. It may come from the reproductive organs, bladder, bowel, abdominal muscles or other nearby structures.

When Does Lower Abdominal Pain Need Emergency Care?

Go to the nearest emergency department if you have:

• Sudden, severe or rapidly worsening abdominal pain
• Pain with fainting, marked dizziness or collapse
• Abdominal pain with shoulder-tip pain, particularly if pregnancy is possible
• Heavy vaginal bleeding with pain, weakness or dizziness
• Severe one-sided pelvic pain, especially with nausea or vomiting

These symptoms may indicate internal bleeding, ovarian torsion or another urgent condition. Do not delay emergency care while waiting for an appointment or taking a home pregnancy test.

Lower Abdominal Pain by Location: What It May Mean

Where you feel the pain is an important clue. Use this as a general guide, not a diagnosis.

• Lower right side: Appendicitis, right ovarian cyst, ectopic pregnancy, or ovulation pain.
• Lower left side: Constipation, left ovarian cyst, ectopic pregnancy, or ovulation pain.
• Centre, just above the pubic bone: Menstrual cramps, urinary tract infection (UTI), endometriosis, or pelvic inflammatory disease (PID).
• Both sides or across the lower belly: Irritable bowel syndrome (IBS), gas, constipation, PID, or endometriosis.
• Pain that starts near the belly button and moves to the lower right: Possible appendicitis. Seek urgent medical care.

Top 10 Causes of Lower Abdominal Pain in Women

The causes are grouped by body system: reproductive, pregnancy-related, urinary and digestive.

1. Menstrual Cramps

Menstrual cramps, also called dysmenorrhoea, occur when the uterus contracts during a period. The pain may:

• Start shortly before or during menstruation
• Feel crampy in the lower abdomen
• Spread to the lower back or thighs

Arrange an assessment if period pain is new, worsening or disrupting daily activities. Pain between periods, heavy bleeding or pain during sex may suggest another condition.

2. Ovulation Pain

Some women experience a brief ache or twinge on one side around ovulation. It may last from a few minutes to one or two days. However, do not assume that severe, persistent or unusual one-sided pain is ovulation pain. Pregnancy-related conditions, ovarian cysts and other causes may need to be considered.

3. Ovarian Cysts

An ovarian cyst is a fluid-filled sac on an ovary. Many cause no symptoms and resolve without treatment. When symptoms occur, they may include:

• A dull ache or pelvic pressure
• Bloating
• Pain during sex
• Changes in urinary or bowel habits

Sudden severe pelvic pain, particularly with nausea or vomiting, needs urgent assessment because a cyst may have ruptured or the ovary may have twisted. Treatment depends on the cyst’s appearance, size, symptoms and menopausal status. www.nhs.uk

4. Endometriosis

Endometriosis involves tissue similar to the uterine lining growing outside the uterus. Symptoms may include:

• Painful periods
• Persistent or recurring pelvic pain
• Pain during or after sex
• Pain when passing stool or urine, particularly around periods
• Difficulty becoming pregnant

Assessment considers the symptom history, examination and imaging where appropriate. A normal scan does not always exclude endometriosis. Treatment may include pain management, hormonal medicines or surgery, depending on individual needs.

5. Pelvic Inflammatory Disease

Pelvic inflammatory disease, or PID, is an infection affecting the upper reproductive tract. It can be associated with sexually transmitted infections or other bacteria.

Possible symptoms include:

• Lower abdominal or pelvic pain
• Unusual vaginal discharge
• Pain during sex
• Bleeding between periods or after sex
• Fever

Seek prompt medical assessment if PID is suspected. Early treatment can help reduce the risk of complications.

6. Ectopic Pregnancy

An ectopic pregnancy occurs when a pregnancy develops outside the uterus, usually in a fallopian tube.Symptoms commonly develop between the 4th and 12th weeks of pregnancy, although the timing varies.

Possible symptoms include:

• Lower abdominal pain, sometimes on one side
• Vaginal bleeding or spotting
• Shoulder-tip pain
• Dizziness or fainting

Seek urgent assessment if you have abdominal pain and might be pregnant, even without a positive pregnancy test. Severe pain, fainting or shoulder-tip pain requires emergency care. www.nhs.uk

7. Urinary Tract Infection

A urinary tract infection, or UTI, can cause discomfort above the pubic bone.Other symptoms may include:

• Burning or pain while passing urine
• Frequent or urgent urination
• Blood in the urine

Fever, chills, pain in the back or side, or vomiting may indicate a more serious infection and need prompt assessment. Urine smell or cloudiness alone does not confirm a UTI.

8. Irritable Bowel Syndrome

Irritable bowel syndrome, or IBS, can cause recurring abdominal pain associated with changes in bowel habits. Symptoms may include:

• Bloating
• Constipation, diarrhoea or both
• Pain related to passing stool

New or persistent symptoms should be assessed rather than automatically labelled IBS. Blood in the stool, unexplained weight loss or other concerning changes need medical review.

9. Constipation and Gas

Constipation may involve hard stools, straining, infrequent bowel movements or a feeling that the bowel has not emptied. It can cause lower abdominal discomfort and bloating. Fluids, gradual dietary fibre changes and suitable activity may help uncomplicated constipation. Seek assessment if symptoms persist. Severe pain, vomiting, a swollen abdomen or inability to pass stool or gas needs urgent care.

10. Appendicitis

Appendicitis is inflammation of the appendix. Pain may begin near the belly button and move towards the lower right abdomen. Other symptoms can include nausea, loss of appetite, vomiting or fever. Not everyone has this typical pattern. Worsening abdominal pain, especially on the lower right side, needs urgent assessment.

What Else Can Cause Lower Abdominal Pain?

Other possible causes include:

• Fibroids or adenomyosis
• Urinary stones
• Diverticulitis and other bowel conditions
• Hernias
• Abdominal muscle strain
• Pelvic-floor muscle problems

The appropriate assessment depends on your symptoms, age, medical history and whether pregnancy is possible.

When to Worry About Lower Abdominal Pain

See a doctor straight away if you have any of these 5 warning signs:

1. Sudden, severe pain, or pain that makes it hard to stand or walk
2. One-sided pain with a missed period or a positive pregnancy test
3. Pain with fever, vomiting, fainting or dizziness
4. Heavy or unusual vaginal bleeding, or blood in your urine or stool
5. Pain that lasts more than 2 to 3 days, keeps coming back or stops your daily activities

How Doctors Diagnose Lower Abdominal Pain in Women

Your doctor will first ask where the pain is, when it started, how it feels and how it relates to your periods. They will then examine your abdomen and may suggest some of these tests:

1. Pregnancy test to rule out ectopic pregnancy
2. Urine test to check for a UTI, kidney stones or blood in the urine
3. Blood tests to look for infection, inflammation or anaemia
4. Pelvic ultrasound (abdominal or transvaginal) to examine the uterus, ovaries and fallopian tubes
5. CT scan if appendicitis, kidney stones or diverticulitis is suspected
6. Vaginal swabs to test for infections such as PID
7. Diagnostic laparoscopy, a keyhole procedure, when endometriosis or another pelvic cause is suspected but not confirmed by scans

Treatment for Lower Abdominal Pain at Lux Hospitals, Hyderabad

Treatment depends on the cause:

• Infections (UTI, PID): antibiotics
• Period pain, IBS and constipation: medicines and lifestyle changes
• Ovarian cysts, endometriosis and appendicitis: often minimally invasive (laparoscopic) surgery
• Ectopic pregnancy: medicine or emergency surgery, depending on how early it is found

At Lux Hospitals, HITEC CITY, our NABH-accredited gynaecologists, urologists and gastro surgeons work together to find the exact cause of your pain

Conclusion

Lower abdominal pain in women can start in the reproductive organs, the urinary tract or the bowel. Most causes, such as period cramps, ovulation pain and constipation, are mild. Others, such as ectopic pregnancy, ovarian torsion and appendicitis, need emergency care. Noting where the pain is, when it happens, and your other symptoms helps your doctor find the cause quickly. If your pain is severe, unusual or keeps coming back, book a consultation with a gynaecologist.