Neurological Problem...hyperventilating and tingling

Hi, I had a problem with breathing and swallowing for a long time, about 2 months ago I had a real bad attack with it. I was hyperventilating a lot and could feel tingling all over from lack of C02. I was taken to the hospital and they took my blood pressure and found that when I was laying down my blood pressure was really high and when I stood up it flew down really far. It fluxuated from around 178 over 80 to 60 over 30 or something like that. So they admitted me with orthastatic hypotension. They found H pylori in my stomach and found that I had bad acid reflux so they put me on anti biotics and acid medicine. As soon as I got out of the hospital I started feeling dizzy still and I had these feelings of brain freeze in my head along with this feeling of being trapped in a dream state. It was very uncomfertable. I went to a neurologist and he did a spinal tap which came out with a high protein level of (61) but no more information could be found on it. They did a cat scan, mri, eeg, barre, emg, and a lot of blood work only to find nothing. All the tests came back negative. I don't even know where to go from here. The neurologist is clueless so he reffered me to another neurologist and I have a appointment with a neuro opthimologist and a psychiatrist. But I almost feel like everything is a loss cause. Does anyone have any ideas?