So frustrating when no one can find the answer. I'm sorry you are dealing with this. My niece just told me a story I knew nothing about. She had been throwing up all the time, had been hospitalized, and ran every test under the sun, she was passed from doctor to doctor until one finally nailed it. She was a marijuana smoker and it was making her sick. Stopped the marijuana use and was back to normal. Just food for thought. I hope you get some answers.