Yes dont fear death, it will come when it comes. 

As far as the dieing feeling you get maybe embrace this as the loss of your old ego, and dont fight it, dont fear it, embrace it my friend.  And then die,and you will see you will be reborn and that is simply wonderful.

I have literally felt/thought that my heart has stopped with such instances, which was kind of wierd.

welcome and,

Outsa, Woutsa