Talk to Gastroenterologist on Dark Stools

Hi doctors I am facing dark greenish stools for almost 20 days I am attaching my ultrasound and Blood cp medicine prescribed by doctor novidate 500mg for 5 days no benefits, Despas capsule for 5 days no benefits, Stool frequency is much more then normal 4 5 times a day I don't have any pain now I had pain few days but now pain is negligible but yes sometimes i feel little pain below the stomach, I had constipation used lactose for few days constipation faded away