You’ve been through a lot. Thank goodness your cardiologist is pursuing this more vigilantly than your primary doctor. I hope that your endocrinologist has a similar devotion to finding the cause of these chronic headaches, which must be exhausting to cope with over such a long period of time!
She is a woman, so maybe she'll be sympathetic to another woman. LOL
I also found a “holistic natureopath” who did her pre-med work at Truman State in Mo. They admit the brightest hard working kids there, so I know she would be intelligent. If all else fails, I'll be going to get a second/third whatever opinion. This is not a recognized doctor in Mo. though it is in some other states, so she has to work in collaboration with an MD.