For the past 10 months i have had major headaches and i always feel light headed,alot of the time my heart will race to. I was diagnosed with high blood pressure hypertension about 4 months back and im on blood pressure medicine which keeps my levels controlled but i still always feel like im not in this world,im always light headed, and i have a hard time breathing alot of the time. Once in a while i get rapid heartbeat and irregular heartbeats which just started a few months ago, my doctor had me get an electrocardiograms done of my heart to see if there was anything going on there but everything came back within the normal range, ive gotten a ct scan done and that came back normal to,all my blood work came back normal. I do have graves diesese but i am on medicine and its at a stable level so they ruled that out of the issue to. Im just getting really frustrated with always feeling crappy,always having headaches and always being light headed. Does anyone have any idea whats going on. thanks so much