What Could Dizziness, Fatigue And Muscle / Joints Discomfort Indicate?

Hi, I am a active and fit 38 year old woman. I am feeling very tired and have intence tirdness in my eyes which does not alter after sleep. I have felt some joint and muscle discomfort. I have had some dizziness and feel detatched like in a goldfish bowl. My concentration isnt great. I feel happy with life but have had these symptoms several months now and my doctor cant find a cause. Could it possibly be teeth related? Many thanks. Kate