Can fibroids cause lower back pain?

Yes. Large fibroids, or fibroids on the back wall of the uterus, can press on muscles and nerves in the lower back. The pain is often a dull, constant ache that can get worse during your period. Some people also feel pain down the back of the leg if a fibroid presses near the sciatic nerve.

Can fibroids cause constipation or bloating?

Yes. Fibroids on the back of the uterus can press on the rectum, making bowel movements harder or feel incomplete. A larger uterus can also cause bloating, a swollen belly, or feeling full quickly — sometimes mistaken for weight gain or IBS.

Can fibroids make you pee more often?

Fibroids on the front of the uterus can press on the bladder, causing frequent urination, waking at night to pee, or feeling like your bladder never fully empties.

Can fibroids cause anxiety, depression, or fatigue?

Indirectly, yes. Heavy bleeding often leads to iron deficiency, which causes fatigue, brain fog, a racing heart, and low mood. Living with pain, unpredictable bleeding, and poor sleep also raises rates of anxiety and depression.

How are fibroids diagnosed?

Usually with a pelvic ultrasound, sometimes followed by an MRI. Blood work such as a CBC and ferritin checks for anemia and low iron stores.

Do fibroids go away on their own?

Fibroids often shrink after menopause, when estrogen drops. Before then, they may stay the same or grow. Small fibroids without symptoms usually just need monitoring.

When should I see someone about fibroid symptoms?

See a clinician if you soak a pad or tampon every hour, pass large clots, have periods longer than 7 days, feel dizzy or very tired, or have new pelvic, back, or bowel symptoms that don't go away.

Can Fibroids Cause Back Pain, Bloating & Constipation?

Creator: Christine M. Forge, MSN, PMHNP-BC, FNP-C
Published: 2026-10-15

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•Fibroids are non-cancerous growths in the uterus; up to 70–80% of women develop them by age 50.
•Depending on size and location, they can press on the back, bowel, or bladder.
•Fibroid back pain is usually a dull, constant ache that may get worse during periods.
•Pressure on the rectum can cause constipation, bloating, and a swollen belly that looks like weight gain.
•Heavy bleeding can lead to low iron — a common, missed cause of fatigue, brain fog, and low mood.

Can Fibroids Cause Back and Gut Problems?

Yes. Uterine fibroids can cause lower back pain, constipation, bloating, and frequent urination when they grow large enough to press on nearby organs and nerves. These are called "bulk symptoms," and they depend more on where a fibroid sits than on how heavy your periods are.

Because these symptoms look like IBS, a back strain, or a bladder problem, fibroids are often missed for years. Black women are 2–3 times more likely to develop fibroids, and tend to develop them earlier and with more severe symptoms.

Where the Fibroid Is Changes the Symptoms

Fibroid location	What it presses on	Common symptoms
Back wall of the uterus	Rectum, lower spine, nerves	Constipation, painful bowel movements, low back pain, leg pain
Front wall of the uterus	Bladder	Frequent urination, waking at night to pee, urgency
Inside the uterine lining	Uterine cavity	Heavy or long periods, clots, anemia
Outside the uterus (large)	Belly and nearby organs	Bloating, swollen belly, feeling full quickly

Fibroid Back Pain vs. Regular Back Pain

Fibroid-related back pain is usually a dull, deep ache low in the back or tailbone area. It often gets worse around your period, doesn't improve much with stretching, and may come with pelvic pressure or heaviness. Muscle strain, by contrast, usually follows an injury and changes with movement. Pain or numbness down the back of the leg can happen when a large fibroid presses near the sciatic nerve.

Fibroids and the Gut: Constipation, Bloating & Fullness

A fibroid on the back of the uterus can narrow the space for the rectum, making stool harder to pass or leaving you feeling like you never fully finish. A larger uterus can also push on the bowel and stomach, causing bloating, gas, a swollen lower belly, and feeling full after small meals. Iron supplements for fibroid-related anemia can make constipation worse — a gentler form or every-other-day dosing often helps.

The Hidden Link to Fatigue and Mood

Why fibroids can affect mental health

Heavy bleeding drains iron stores. Low iron — even before full anemia shows up — can cause exhaustion, brain fog, restless legs, poor sleep, a racing heart that feels like anxiety, and low mood. Add chronic pain and unpredictable bleeding, and it's no surprise that people with symptomatic fibroids report higher rates of anxiety and depression. Checking ferritin is an easy step that's often skipped.

Treatment Options

•Watchful waiting for small fibroids without symptoms
•Iron replacement and labs to treat anemia
•Anti-inflammatory pain relief and tranexamic acid for heavy bleeding
•Hormonal options such as a hormonal IUD or birth control
•Newer daily pills that reduce fibroid bleeding (GnRH antagonist combinations)
•Procedures through a gynecologist: uterine fibroid embolization, myomectomy, or hysterectomy

The right choice depends on your symptoms, fibroid size and location, age, and whether you want future pregnancies. As a family nurse practitioner, Christine can help sort out symptoms, order labs and imaging, treat anemia, and coordinate a gynecology referral when a procedure is needed — while supporting the mood and sleep side.

Get care right away for:

•Soaking a pad or tampon every hour for 2+ hours
•Dizziness, fainting, shortness of breath, or a racing heart
•Sudden, severe pelvic pain — seek emergency care
•Not being able to pass urine or stool

Frequently Asked Questions

Tired, Bloated, and Not Sure Why?

Christine treats physical and mental health together by telehealth for residents of Florida, Wisconsin, and Nevada — so symptoms like fatigue, pain, and low mood get looked at as one picture.

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Medical disclaimer: This article is for general educational purposes only and is not a substitute for individualized medical advice, diagnosis, or treatment. Fibroid procedures are performed by gynecology specialists. If you have heavy bleeding with dizziness or fainting, or a mental health emergency, call 911 or call or text 988.

Hormones & Mental Health

Dual board-certified Family & Psychiatric Mental Health Nurse Practitioner at Inspiring Transformations MHC LLC

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Can Fibroids Cause Back Pain, Bloating & Constipation? What to Know

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