If the black color is from blood, it is known as "melena." Most likely it is normal, and there is a perfectly reasonable explanation. Any time you notice blood or think there might be blood in your stool, you should contact your doctor. And I just wanted to know if there should be consistency in my stool color? I hope here to explain many of the concerns you all have so that you can sleep at night and not worry why your latest bowel movement was so odd. Often blood in stool is temporary and mild and requires no treatment. Rectal bleeding is the passage of blood through the anus. Could be an infection or just a malfunction of the organ. There are many causes of rectal bleeding. Small amounts of blood in the stool can indicate hemorrhoids. Searching on the internet suggests the yellow stuff is bile. Your poo may also be tarry and dark (called melena), which is an indication of bleeding in a higher area of the GI tract. Occasionally, blood clots in stool come from small hemorrhoids or minor tears in anal tissue. Very informative! Read more about rectal bleeding (blood in Stool) symptoms and causes » These can include multiple bowel movements in a row with fresh blood and unexplained weight loss. After melena is diagnosed, a physician may order other diagnostic tests to determine the cause and exact location of the bleeding. as in all of a sudden have traces of black in it.As mine have been like that for the last week or so. Blood stained stool; Excruciating pain in the lower abdomen; If you are experiencing large amounts of mucus in your stool, then you have a problem in the ileum. Dark blood mixed with the stool. Thanks stylezink, pleased you found this useful, but sorry to put you off your recently eaten lunch in the process lol. blood is coming from the rectum or the lower colon, bright red blood will coat or mix with the stool You would be best off getting a stool sample tested by your Doctor to be on the safe side. If you have been suffering from heartburn, chest pain, coughing, wheezing or a sore throat, you could be suffering from gastroesophageal reflux disease aka GERD. According to UptoDate,4 seeing blood on the outside of your stool, on toilet paper after wiping, or in the toilet is fairly common and most of the times, it is not the result of a dangerous medical issue. Hi Misty...thanks for the kudos...just checked your "oh dang, I gotta pee again" hub...very well done...another cause of that is the imbibing of beer...in an undocumented study conducted over many years at bars around NYC, it has been discovered that once a woman has a few beers and has to pee, she tends to have to get up and go again every 20-30 minutes, which can lead to funny jokes, crossed legs and, with somewhat great frequency, a need to use the men's room due to the line at the lady's room door....;-). my stool is hard to pass, and its small like nuts, i don't eat alot and i stress sometime. Noticed blood after wiping stool. Tumors can develop in the colon and rectal region and in some people tumors can develop in the large intestine. misty i really need youir opinion....my bm is # 4....i eat fiber & i take colon health....is normal for # 4 poop....it looks like my rectom is strech i don't know ... hi again, i just wanted 2 tell u i have been eating more fiber,& im taking colon health, i only poop in the morning after a little coffee...& my poop is # 4.& sometimes #5 folows ....i cant really feel it when it comes out, isn't your poop supposed to be the size of your rectom...mine is like sausage & pebbles folows...what's your opinion to that?....normal or not..should i give time ..or my rectom is stretch?...no anal sex for the record..lol, Glad you found it helpful Nelly and cheers for commenting :).