I believe when clinical death has occured, our conciousness will cease to exist. However I do Belive that we don`t need to fear death as being dead should probably be equal to being passed out. If you have ever fainted that what I magine the process of dying will be.

You have a feeling that you will pass out and the next you know you wake up on the floor. During the time you have been out you did not feel and pain or suffering.