<s>[INST] Hi,I have slight pain in upper abdomen,mostly under left ribs.I also get dark stools in the morning.I visited a doctor 10 days back when i saw red blood in my stools..Doctor gave me few medicines diagnosing it as bacterial infection and  had conducted stool test which came out to be negative today! Red blood in stools has stopped but not the above. [/INST] Hi welcome to Health care magic forum. Thanks for calling H.C.M.Forum. You have got pain in upper left abdomen. dark stools, some times blood in stools. It appears that you have some infection in the intestines, most probably amoebic infection, or a combination of bacterial and amoebic infections. There could be simultaneous gastric irritation due to irritant foods, or peptic ulcer. I advise you to consult a gastroenterologist for diagnosis and treatment. you may need to use a combination of antibacterial and amoebicidal drug. Wishing for a quick and complete recovery. best regards. </s>