However, passing mucus in the stool, especially if it is a new symptom, should still be mentioned to a physician at the next office visit. Mucus without an underlying cause, such as one of the pre-existing conditions mentioned above, is a change in bowel habits and should be reported to a physician immediately.
Coughing up blood. Coughing up blood is the spitting up of blood or bloody mucus from the lungs and throat (respiratory tract). Hemoptysis is the medical term for coughing up blood from the respiratory tract. Considerations. Coughing up blood is not the same as bleeding from the mouth, throat, or gastrointestinal tract.
Blood in stool. Blood in the stool means that a person is passing blood when they do a poo. The blood is not always red â sometimes it can be dark brown or black. There can be blood clots. Occasionally a person passes blood and mucus at the same time. The bleeding might be painful or it might be painless.