Hello, I am a 55yo female. Ever since I can remember I have never had exercise tolerance. I learned in my 30's that I had MVP. My exercise tolerance in the past 15 years has steadily decreased. I get chest pains, short of breath, feel the need to constantly take a conscious deep breath to feel like I'm breathing at all. My heart races for no reason but always when I lay down. I have been through two primary doctors, three cardiologists and three pulmonary doctors. I have had every possible pulmonary and cardio test know to man--with the exception of a TEE which they won't do because of previous esophaugus surgery. My MVP is mild with mild regurgitation. The bubble test showed a PFO. I've been told it's anxiety. It's not and I humored one doctor and took medication for it. It didn't help my breathing and made me feel like a zombie. I tried another medication and that just did nothing. I was told it I was deconditioned. I joined a gym and got a personal trainer. I worked up to a level and am now at a brick wall and can't go any further. I get short of breath a light headed far sooner than I should and still can't walk up a flight of stairs without my heart pounding. My arms will get a burning sensation and now my arms and legs will turn purple with white spots and they'll just as mysteriously go away. This is going on for 15 years and I just want to be able to get through the supermarket without feeling like I need to nap. Please help, I'm not crazy.