Our expert says:
You have the symptoms of a possible stomach ulcer. If you don't have a medical aid, go to your nearest provincial hospital's outpatient departement, the doctor will examine you and send you for a special test called a gastroscopy. (http://www.netdoctor.co.uk/health_advice/examinations/gastroscopy.htm)
If you have an ulcer, you will get medicine to use for about 2-3 months to heal the ulcer. The black stools are a sign of bleeding inside the stomach, so don't wait any longer. A stomach ulcer is 100% treatable.
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