Could Fibromyalgia Be The Reason For Frequent Passing Out?

I have been diagnosed with fibromayalgia but for the past year i have been having seizure like episodes. i have pased out causing a car accident, i frequently space out, even burning myself without knowing it, and i am always falling down and very dizzy. I have had all tests done to check for seizures but the doctors can't find a problem. Could all this simply be from the fibro or is it something more? Please help