The short explanation
An infection is possible, but loose motions with mucus and blood that have lasted several weeks are unlikely to be a simple infection, which usually settles within days. This pattern needs prompt medical assessment. One possibility doctors consider is inflammatory bowel disease, such as ulcerative colitis, which causes inflammation of the bowel lining and often starts in young adults. Other causes include longer-lasting infections such as amoebiasis, or other bowel conditions. A doctor will usually arrange blood tests, stool tests, and often a colonoscopy to look at the bowel lining and take small samples. Inflammatory bowel disease is a long-term condition, but with treatment many people manage it well.
What depends on your situation
The parts of this that change from woman to woman. Uncertainty is stated, not hidden.
- Weight loss, fever, tiredness, abdominal pain, joint pain or mouth ulcers alongside these symptoms are useful to mention.
- Avoid using medicines to stop diarrhoea without medical advice, as they can be harmful when there is blood in the stool.
- Keep drinking fluids to prevent dehydration.
What this answer cannot determine
The boundary of online education. These need a clinician who can see you.
- This cannot tell you what is causing your symptoms. Tests and an examination are needed.
Questions for your clinician
Take these with you. You can add any of them to an appointment card.
- Could this be inflammatory bowel disease?
- Do I need a colonoscopy?
- Which stool and blood tests should be done?
- How can I manage symptoms while waiting for results?
When to seek help
Clinician-approved guidance for this topic. When in doubt, being seen is never the wrong choice.
Emergency — call 112 now
- Call 112 or go to emergency if you pass a lot of blood, feel faint, or have severe abdominal pain with fever.
Get help the same day
- Get care the same day if you cannot keep fluids down or feel very weak.
Book an appointment soon
- See a doctor within a few days for tests, since symptoms have lasted weeks.
Sources
The evidence this explanation is built on.
Who wrote and reviewed this
Every AskHer answer names its author. A clinically reviewed answer also names the clinician who signed it off — if no clinician is named below, it has not been clinically reviewed.
- Author
- AskHer Editorial (AI-assisted draft) AskHer's editorial team — not an individual clinician Works in English, தமிழ், हिन्दी
- Clinical reviewer
- Nobody yet No clinician has signed this answer off, and no person on the editorial team has read it yet. That is what the “Written with AI assistance” label means. It is queued for an editor to read, and then for a clinician who works in this area. The sources it was drafted against are listed above.
- Review status
- Written with AI assistance — not yet reviewed by a person
- Last reviewed
- Not yet reviewed by a person
- Version
- 1
Correction history
Substantive changes are listed, not quietly edited away.
No corrections have been made since this answer was first published.
Did this answer your question?
Whatever you choose is filed against this version of the answer, never against you, and it is never shown as a count.
“Explain more simply” asks you which part was hard to follow, so the author knows what to rewrite. “My question is different” opens a private follow-up with this answer attached.
Saving, following up and reporting are all private. Nothing you do on this page is visible to other readers or to the doctor who wrote it, unless you ask a question.