tiresome

Hello, I go monday to Chicago for a Video EEG. I am feeling frustrated because this week my symptoms have let up and I am afraid that they will stay gone during the test. It is unusual for them to stay gone, but in the past they have let up long enough for me to think they are finally gone only to come back with a vengence. I am so afraid that they will never find out what is wrong with me. I also asked the doctor to do a brain and spinal MRI but he only agreed on the brain MRI, sigh, it is so hard not knowing exactly what is wrong. I have symptoms that vary and the doctors mostly seem to think that most is caused by partial complex epilepsy or depression. Please pray for me. Here is a list of my symptoms:
1)odd sensation in my head. (feels like a small explosion when it hits hard and the softer ones feel like a "zap, shock, or wave" Have had this for about 4 years. Can happen once in a while or every few minutes for days at a time. Hard ones make me flinch.
2) loss of balance. ( can walk into doorways, chairs or have to grab something to keep from falling over)
3) speech problems. (will forget simple words but can usually remember what they start with, forget midsentence what I was saying or talking about and I pause for long periods during talking but then pick up as if I hadn't paused.)
4) different odd sensation in my head. (started a few months back, have only had these when laying in bed about to sleep or awakened by them. Feels like a metal blind being bent the wrong way, that kind of vibration but no sound.
5) I have stabbing pains in my shins, chin, collarbone mostly but sometimes random areas. (last only seconds but will make me cryout or gasp from their intensity.)
6) vision problems ( this symptom has lasted one year, started out being my right eye was cloudy in perefial vision, worse in flourescent lighting, better with sunglasses. Wal-Mart was a bad store for me and still is as other stores. Two episodes with left eye blurring, lasting only a couple of days. The right eye never went back to normal but did improve, now only certain lighting bothers it and when I do too much like climb stairs. 3 eye docs say my eyes are near perfect, must be brain related to go to neuro, neuro says see eye doc LOL must keep my sense of humor!!!!
7) others I can't think of now but probably too minor to mention

Anyways from monday to saturday I will be in hospital and am hoping (can you believe that) my symptoms return so that we can get this figured out and I can get better. If anyone has any similar symptoms and know what is going on I sure would like to hear from you.
Thanks,
Laura