Petition updateMake reproductive surgeries more accessible for womencan endometriosis cause blood in stool when not on period
Lisa WelkeBowmans, SA, Australia
Nov 12, 2025

Another question out of curiosity: can endometriosis cause blood in stool when not on period?

Yes, endometriosis can cause blood in stool when not on your period, as endometriosis implants on or near the bowels can bleed at any time. This is because the tissue, which is similar to the uterine lining, can thicken and break down outside the uterus, sometimes leading to rectal bleeding that is not directly linked to menstruation. 

How endometriosis causes rectal bleeding

Implantation on the bowel: When endometrial-like tissue grows on or near the intestines and rectum, it can become inflamed and bleed.

Tissue breakdown: This misplaced tissue responds to hormonal changes and thickens, breaks down, and bleeds with each menstrual cycle, even if it is not inside the uterus.

Scar tissue and adhesions: The bleeding can lead to inflammation, scar tissue, and adhesions (bands of fibrous tissue) that can cause tissues and organs to stick together, further affecting bowel function. 

Other symptoms of bowel endometriosis

Deep pelvic pain

Painful bowel movements or urination

Constipation or diarrhea

Pain during or after sex

Intestinal pain

Nausea 

What to do

If you experience blood in your stool, it is important to see a doctor to determine the cause. While endometriosis is a possibility, other conditions can also cause these symptoms, such as polyps or cancer. A doctor, ideally a gynecologist specializing in endometriosis, can properly diagnose the issue. 

If a man was to present with blood in his stool, he'd have been referred and tested instantly. Women deserve the same care as men! 

Let women choose!

Keep signing and keep sharing!

Thank you! Appreciate you!

Lisa Welke 

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