Hello, I seem to have episodes where it starts with a headache,than dizziness,then nauseousness. I think I may have a pinched nerve in my neck, because my arms go numb really easy and I have a lot of regular headaches. But the episodes that I am having happen at least three times a month and I end up throwing up and almost passing out. Could this possibly mean that I m not getting enough oxygen to my brain? Also I feel like I m having a hard time breathing.