Hi.
Thanks for your query.
Noted the history about your uncle and understood your concerns.
Per-rectal bright red blood without any pain or other symptoms along with pus in stool only on forcing for passing motion can be due to the following reasons:
Hemorrhoids or piles.
Polyp or cancerous growth too cause painless bleeding per-
rectum.
I would advise you the following:
Tests of stool for three consecutive days.
Colonoscopy and consultation of a
General Surgeon as Doctors in ER may not be an experienced ones.
All such things will definitely lead to a proper diagnosis.
Surgical cause may need a surgery and if the cause is medical one, it is necessary to take medications as required.
Till them have Sitz bath in a tub with warm water.
Take laxatives to keep stools soft.
Watch for any further bleeding or so.
You may need a course of an antibiotic,
metronidazole and probiotics.
Avoid the foods and beverages that cause the symptoms.