Lower back pain during your period: what is causing it

Lower back pain with periods is not a coincidence. The uterus shares nerve pathways with the lower back. When prostaglandins make the uterus cramp, the same signal lights up the lower back, and sometimes radiates into the hips and thighs. For some women it is the main symptom, more than abdominal cramps.

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Heat where it actually helps

Wrap a heating pad around your low back AND lower belly together. The shared nerve pathway means relief in one zone calms the other. Lying on your left side with a pillow between your knees helps drain pelvic congestion.

Three stretches that move the needle

Child's pose for 90 seconds. Supine spinal twist (knees to one side, shoulders flat) for 60 seconds each side. Cat-cow for 10 slow rounds. Do them before bed during your period week.

Pelvic floor PT

If back pain with periods has gotten worse over years, a pelvic floor physical therapist can change your life. They release tight pelvic muscles that are silently contributing. Most insurance covers it.

When back pain is not the period

Pain that radiates down one leg, numbness, weakness, bladder or bowel changes - that is a disc issue, not your period. Get it checked separately.

Common questions

Why is my lower back pain worse than cramps? +

Anatomy. Some women have a tilted uterus or different referral patterns and feel the cramping signal more in the back than the belly.

Can endometriosis cause back pain? +

Yes, endometriosis on the rectum or behind the uterus often presents as deep back pain that worsens with periods. Worth raising with a gynecologist.

Does a TENS unit help? +

Yes, several studies show TENS units placed on the lower back reduce period back pain meaningfully. They are inexpensive and OTC.