| Has your blood pressure been taken recently? lightheadedness can be caused by either high or low blood pressure (the lightheadedness on low blood pressure generally shows up when you stand up too quickly after lying down)
are you keeping any kind of food journal as to what you are eating when - and is there any kind of correlation to when the spells happen?
I'd honestly give my doctor a shout especially since its not usual behavior for you.
Hope you feel better soon.. | 
