Hi there
you have every right to be angry. I hope that you have been able to express this anger to your specialists and gp. Unfortunately medicine is not an exact science but I am very surprised given your history that they didn't at least do some tests on it. If you don't feel comfortable with decisions that your doctors make in relations to your health, stand your ground and ask for tests. If they still don't come to the party, get a second opinion.
I'm really sorry that you are having to go through this all again. Perhaps get some counselling to give you strategies for dealing with the anger so that it doesn't affect your health. Take care. Karen xox