Our expert says:
You will have to consult your doctor for a gastroscopy and colonoscopy as soon as possible. It is possible that you have developed a gastric ulcer or severe erotion of the oesophagus. A bleeding gastric ulcer will usually cause tar like stools, due to the influence of gastric acid on blood. In severe cases, you can pass bright red stools, due to a bleeding gastric ulcer. It is really very important to consult your doctor.
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