Keep havin dreams of zombies.?

i keep on having dreams about dam zombies and there not really gory but they do kill ppl around me. like i would make a desicion and 10 15 ppl would die because of it. i barely have any good dreams and can u contol them ? i keep on thinking of the end of the world, the rapture, and is there a verse in revelations "when hell is full the dead shall walk the earth"? thanks..