First off slow down and take a breath. My doctor has been wrong about a couple of things so far. And I realize your anxiousness. You don't have any test results back yet. Start learning all you can about this disease, I swear, the more you know the more you relax. You can start arming yourself with questions for the dr. no matter what the diagnosis.
You came to a great website here. I have gained so much knowledge and the people are very kind. Good luck to you and yours.