Hello ! Thank you for your question ! I understand your concern. Your pinched left vertebral artery could lead to variable symptoms: -Episodes of vertigo and this may be the only symptom. -Dizzines ( a feeling of lightheadedness) -Episodes of nausea and vomiting. -Disturbance of consciousness, disorientantion, etc -Headaches - Visual disturbances like double vision, blurring vision , vision spots etc. - Speech disturbance , difficulty in articulating words -Numbness and tingling in the face and scalp -Balance difficulty in walking or standing up - Right limbs weakness ( in your case ) or numbness, tingling These symptoms can be more prominent during your head movements and can be various ( one ore more symptoms together ) . Wish to have been helpful to you ! Best wishes , Dr. Abaz Quka