I feel for you, I've been dealing with the same thing, test after test and nothing. The nurse will say it so cheerfully too, you're NORMAL like yay, isn't that good? And all you want to do is scream because every day you are constantly dealing with your problems and you know that you are far from normal.
Another problem I have, is I try to hide the fact that I'm having tests because people then expect well, if it said nothing, then wow you are fine and you must be better then.
((((hugs)))