I am at my wits end because I cannot for the life of me believe this is anxiety. Every time I lie down to go to sleep my body begins to float.. move but its not moving, its all happening inside. My head goes around in circles, but not spinning... I feel like my back is sinking into the bed and my neck is uncomfortable. This has been happening for nearly four years now but is getting worse because it is now interfering with my sleep. I lay there feeling the sensations and cant shake them off. Does anyone else have this? Is it anxiety like I have been told? I have changed my antidepressants from cipralex to prozac. I am on day 16 of prozac 20mgs and hoping that will do something to help, but the anxiety I am having over this floating sensation is awful.