Jesuss44,
i had written a lengthy explanation on your situation but it is being reviewed by the site. I had referenced some helpful resources for you and that might have thrown a red flag for the admins. Sorry. Im definitely not here to make money on stuff I am truly an anxiety sufferer just like you. And went through exactly what you are describing and it is totally terrifying and we need more education on this. Not sure if you are male or female but this is what is causing your out of body feelings...
Unrelenting emotional stress (work, relationship, finances...)
Adrenal Fatigue (research this!!!!)
Thryoid and Hormonal Imbalance (esp.if you are female)
Try ETF Emotional Freedom technique is an awesome technique to calm the mind and unblock negative emotional energy..very powerful..i use it myself and it is amazing.
See a doctor who is more inline with "wellness and holistic" approaches.
Best wishes on your healing.