Many experience this feeling of death. You have no body.  Your senses are removed.  Your mind begins to panic. Where is my body?  Where are my senses?  This place is so odd that I must be dead enable to experience anything like this.

You have to let go of these thoughts.  Let it all go and just allow yourself to have the experience without all the mind chatter.  Thoughts will come and they will go. Just breathe and pay attention. Nothing more.  Relax and let go. Whatever you are feeling,go straight for it,allow it to come in and wash over you. The fear will pass.  The feeling of death will pass. Go into your fear.  Imagine that you have died.  How does that make you feel?  You can pull a lot from going into this for yourself.  Allow your mind to think that you have died.  Let it come in and pay attention what comes up.  If you ignore your fears, they will return until they are dealt with. So deal with it.  Practice dying.