Depending on where bleeding occurs, blood may appear bright red, dark brown, or even black. Colorectal cancers can bleed into the digestive tract, although the bleeding isn’t always visible. Over time, small amounts of blood loss can contribute to anemia. ([Cancer.org][1])
There are many causes of rectal bleeding that are not cancer. Hemorrhoids and anal fissures, for example, can cause bleeding.
Nevertheless, unexplained blood in your stool should be discussed with a healthcare professional, particularly if it happens repeatedly or is accompanied by other changes.
Do not assume that visible bleeding is simply hemorrhoids without getting appropriate medical advice.
3. You Constantly Feel Like You Need to Go
Another possible warning sign is a persistent feeling that you need to have a bowel movement—even after you’ve already gone.
This sensation is sometimes described as an incomplete bowel movement or persistent rectal pressure.
Occasional changes in bowel movements are common. But when this feeling is new and continues, especially when combined with bleeding or changes in stool, it deserves evaluation.
