Blood in stool, particularly after or alongside loose motions, should always be taken seriously and properly investigated â your doctor is right to recommend a colonoscopy (the 'telescopic test'). The stool test showing mild infection suggests infectious colitis â bacteria like Shigella, Campylobacter, or Entamoeba histolytica can cause bloody diarrhoea by inflaming the lining of the colon. However, blood in stool can also come from other causes like internal haemorrhoids, a small polyp, or early inflammatory bowel disease â all of which can only be properly identified by directly looking inside the colon with a camera. The colonoscopy will both identify the source of bleeding and allow the doctor to take a biopsy if needed.
Next Steps
Please go ahead with the colonoscopy as your doctor has advised â do not delay or skip it. In the meantime, stay well hydrated with ORS or coconut water, eat a light and easily digestible diet (curd rice, khichdi, banana), and avoid spicy or oily food. If the doctor has prescribed antibiotics for the infection, complete the full course. If you notice increasing blood in stool, severe abdominal pain, or high fever, go to a hospital immediately. Please consult me directly on Practo for a detailed evaluation.