any other medical problems or medications?
Any weakness of the face or arms or legs (or numbness elsewhere)?
How long has this been going on?
Well, to be honest with you, your symptoms could be related to stress, but this could also be a neurological process. In particular you may not be getting enough blood flow to certain parts of the brain which are giving you the symptoms (mini-strokes or transient ischemic attacks). Other causes may be vitamin deficiencies.
At any rate, it is absolutely imperative that you see a doctor for evaluation. ASAP. Particularly if this is getting worse. Realistically, you should go to the ER. In particular, this could be a transient ischemic attack of the vertebrobasilar circulation.