Hi there ~
I understand your concerns. If you are having pain in your left arm and high blood pressure
with your doppler test showing no significant diagnoses, I would like for you to know that you are in for a shock
if you find out that you have ischemic changes in your heart. I hope not, but you should get your troponins tested and get 2d echocardiograms, angiogram or at least a treatmill test. I also think that you should consult a neurologist
in addition to a cardiologist. I hope this helps.
Take care and have a lovely day!