Being Investigated For Hemochromatosis - Iron 774, But Internist Thinks

Being investigated for hemochromatosis - iron 774, but internist thinks I have inflammatory disease & started me on 20 mg Prednisone Friday am. Also have extreme fatigue, HA's, slightly elevated ESR. Friday night I had tachycardia & called ambulance. Pulse 300 & 2 times had to use vagal maneuvers to reduce pulse. BP very high. No heart attack noted after bloodwork 6 hrs later. I noted my BP was extremely labile in ambulance & hospital. Continued with prednisone, but think I should stop. Suspect Prednisone caused this crisis & my BP is very up & down & resting pile varies, but often 96. Suspect Pheochromocytoma & I want your opinion on this. Will have to track my Internist down tomorrow.