Perhaps this is related to what marze said, but based on your experience it sounds like you looked into some CAM approaches (especially from the documentary you mentioned). If you don't mind sharing this with us, I am curious to know if the doctor who came up with the correct diagnosis would fall under this category? Also, your experience with all the different doctors with their own specialties reminded me of functional medicine, an alternative approach. (For anyone who is not aware, "Functional medicine reflects a systems biology approach because it includes an analysis of how all components of the human biological system interact functionally with the environment over time. The Institute for Functional Medicine contrasts this approach with an organ system biology broken down into modern medical specialties.")
Best of luck to you, and I'm glad you now at least know what the problem is. Not knowing why this was all happening must have made it even worse.