Thank you for your reply. My B-12 (as far as I know), has not been checked. But my neurologist is running numerous blood tests. I understand you getting tired of seeing doctors….. I’ve been doing the same thing. I went through all the heart testing last week with my cardiologist, and have been to numerous other doctors and testing as well. I’m exhausted, but I will fight this… whatever is causing these symptoms. Thank you got your support and understanding!