Hi Susan27-- welcome to PC.

Yes, I can relate to this. There are different types of dissociation, and it sounds like you're describing depersonalization.

Derealization is a similar term to depersonalization, and the two are often used interchangeably. However, more specifically, derealization is the feeling that "nothing is real," while depersonalization is the feeling that one is literally "detached" from one's body or world.

There is more info on the web, even support forums specifically for these disorders.

Hope this helps a little.

Petunia

http://en.wikipedia.org/wiki/Depersonalization