My symptoms include nausea (severe) with green/black stools, a couple days later... yellow stools and green stools, and some are tar black. Weight loss (10 lbs in 1 week), lost appetite and fatigue. I have had blood work that came back normal and I ve had an ultrasound with no findings. I have been taking Promethazine 50 MG for 3 days, prior to that, I was taking Zophran HCL 4 MG. I can feel somewhat ok at night, but when I wake up I have to vomit the bile out of my stomach.