Hi Morif,
I am sorry to hear of your recent increase in anxiety, and subsequent fear of dying.:( This is not uncommon with healthh anxiety sufferers, so know that you are not alone.
Dreams can really have an effect on us, so it is not suprising that this could trigger your latest time of challenge. However, dreams are merely releases of our subconscious, and have no power...
Your own worries were probably supressed, and your dream brought them to the surface...so they can be dealt with, and that's a positive! :)
Have you checked out this book yet? I ask because it does include a whole chapter/section on the fear of death. Perhaps it is something you want to look into getting and working on. In addition, there is just a lot of good anxiety management info to be gained from it as well.;)
http://www.amazon.com/Overcoming-Health-Anxiety-David-Veale/dp/1845298241
I hope that you can get the help that you need soon. Do you see a therapist? This would be a good topic to discuss next session!
Let us know how you are doing soon,
S.C.