I have had the same syptoms, I started just getting dizzy for a few seconds in Sept.and it has now built up to constanly feeling "off" and headaches and neck pain. I have had an MRA & MRI of the brain, inner ear test, MRA of the neck, cartoid atery test, you name it. I am now going for vestublar threapy. nothing is working. Good luck to you, I'll keep you posted.
This question is probably better in the neurology forum, or with the doctor's forum.
Was there a high WBC before the surgery? It could be infection, tingling also can mean nerve or mineral issues - there is just too much going on. A doctor has to evaluate this and more tests need to be run.