Bright blood on stool is almost always from a hemaroid or other anal problem (like a fissure) but that doesn't mean you should just ignore it either. It may be worth a call to the doctor to see if this is a bad enough episode for being seen and re-evaluated. Just because you have internal hemmies (and they don't go away ) doesn't mean that they can't have become flared up and needing treatment, or that you can't get a fissure or other problem at that end that needs treatment.If you get a call into the doctor, either the doc or one of the nurses should be able to help you figure out if this is a "need to be seen" thing or a "treat on your own" thing, or let you know at what point it becomes something you need to be seen about (like if the bleeding stops on it's own by X days...).Blood with colon cancer is usually not visible on the stools and is rarely bright because the blood has aged by the time it comes out.K.