I have been diagnosed with arthritus in my spine, two bulging disks, and sciatica in my hip muscle. I have been having fluttering or quivering feelings after I have been asleep at night and sometimes during the day. Are these related? If not, what could be causing those quivering episodes? They begin below my chest and move up through my lung and heart area. Do you have a clue as to what is causing this strange episode? Thanks for your help.