Im having severe acidity all the time. Whenever m eating my whole chest is burning. Im also having a burning sensation inside my right flank near pelvis followed by severe pain. Also my urine and stool burns a lot. The stool is very loose and dark brown to maroon in colour. These symptoms come and go, depending on my food intake. My ct scan and usg pelvis are normal although one gastroentrologist said one of my lymph node was 1.2 mm or cm i dont remember. I hope its not cancer or ulcer. Kindly suggeat me whom should i consult now.