I Weak And Slurring In My Speech And Laying Down Most Of The Day. I Feel Dizzy And Lightheaded All The Time.

I am 34 year old female who just four months ago was living a very active and fulfilling life lifeand cosidered myself to be healthy. Now I weak and slurring in my speech and laying down most of the day because I am too light headed to do much of anything for long. I am miserable . I feel dizzy and lightheaded all the time. I also get this weird feeling like water is rolling off my brain and a tingling sensation down my arm and hand. I get a tightening numbness under my tongue and I hear a popping and buzzing noise in my left ear. I always feel like im about to pass out. Even when I wake up from sleeping I have to move slow sitting up cause it feels like I may pass out. I have buckled under my knees and fell to the floor at lest ten times with in just the last two mnths. I have blacked out 3 times since november 2010. My doctor have tested me for numerous things incluing diabetes and thyroid, eeg mri and mra. The only thing that was found was cervial stenosis of my spine at c5 c6 c7. However my doc says that wouldnt cause the symptoms that im having. She says she cant find anything wrong with me , theres nothing else she can do, and wished me luck in finding a doctor who can help me. I have no answers for my symptoms and my whole quality of life is dimenishing for I cant do activities I used to do like fishing, driving, playing with my children, reading novels, cooking large dinners, etc. what should I do, what type of specialist should I see for my condition ? I just want to live again. My whole family is worried about me. They see the changes in my health and sometimes they cry when they see me. I am frustrated because I am miserable and cant get answers. If I had an answer at least I could work towards a solution. Please help.