What Does This MRI Test Result For Loss Of Balance, Stress And Loss Of Memory Indicate?

I am a 48 year old female. I have been having symptoms for years- the worst symptom that came up is almost passing out while swallowing. It comes on quickly and goes away quickly. I have been having the symptoms of a difficulty in swallowing - the feeling like I am swallowing rocks for years- but recently this has come to actually on the verge of blacking out - brain MRI appears negative- a very low vitamin d level of 4, I fall - I have a loss of balance worse in times of stress,loss of memory, severe headaches. My sugar levels are dis-regulated, I have heart palpitations,high blood pressure and I was told several years ago that my heart was enlarged but since have had test that concluded my heart rhythm is fine. I have had stress related seizures.