Bleeding
People with a stomach ulcer might also notice blood when they use the bathroom or vomit. In some cases, the stools might turn black or dark, which indicates the presence of blood. To find out the underlying cause, your doctor might need to perform an upper endoscopy or a blood test. This symptom tends to be accompanied by upper abdominal pain or nausea as well. Keep in mind that this is a severe issue that suggests the progress of the disease. Thus, seek medical attention as soon as you notice it. [3]
