question: Hello,         I have been in a lot of pain in my stomach since the end of November and have seen my doctor and have had blood tests urine tests and have given a stool sample. All came back clear. Next was a ultrasound which also came back clear as well as a x-Ray. Pain is like a burning sensation and can last for hours. My bowel movements are regular but the colour has varied from black to normal but never loose. My weight has gone down a stone. I'm so worried as I have a young family