i am suffering with suicidal depression because i have had strange feeling in which everything seems to be in a movie, i lose sense of time, and cant regonize my voice. i get raging headaches, naseua, muscle aches, strange stabbing pains in my head and chest, tingling, along with loss of appetite. I also feel squirmish and uncormfortable. I am scared out of my mind!! what is this? is it brain injury? just anxiety? cancer?!? i cant enjoy my life for i am in fear of everything... this has been countinuing for two months, please answer... also 2 days before this started i went on a violent rollercoaster. so could it be brain bleed or brain injury or even brain tumor