If I were you, I'd ask the doctor for advice.
Especially since you are dizzy and lightheaded.
Do you feel faint when abruptly standing?
If memory serves me correctly, there are 4 arteries that connect to the Circle of Willis on the underside of your brain. Two carotid arteries and two arteries towards the back of your neck. They all combine into a manifold of sorts to assure constant circulation to your brain.
Have you had your blood pressure measured recently?
Post Edited (JungRulz) : 11/15/2014 6:03:18 PM (GMT-7)