Hi, I have had 2 major concussions and whiplash and now have dizziness when I turn my head to the left or look up, I get exertion headaches and feel like the blood circulation in my head is not as it should be due to something pinching in my neck..? Have had neuro, acupuncture, physio, chiro and massage... My gut tells me that there is something wrong with an artery/vein. Do you have any recommendations.