Looked like blood in stool, bright red,on outside & mixed in a little. how do i know whether blood or red bell pepper? if blood how urgent to see doc?

BRBPR due to...: This may just be hemorrhoids from straining but bleeding from rectum (brbpr) may also indicate anal fissures, proctitis (due to infection, inflammatory bowel disease, radiation therapy, stercoral ulcers, rectal prolapse, trauma, etc.) or a bleeding source further upstream. Depending on your age, risk factors, current medication (aspirin, nsaids, anticoagulants can cause bleeding), see your doctor.