Go BACK to your doctor and tell him your concerns. i really don't think you can "feel" your brain "tingle" but you might feel better after a neurological consult...Your anxiety and tension could possibly be relieved by having some good one to one counseling.
Your exam, history and physical were normal, this is a blessing. your blood work was normal?
maybe you can stop focusing on what is wrong and be glad that things are good for your check up?