A cemetery in a dream usually touches on mortality and grief, but rarely as a literal prediction -- more often it's the mind processing an ending, a loss, or a chapter of the past that still needs acknowledging. Walking through calmly can reflect a grief that's settling, while feeling afraid may point to one still unresolved.
The first sign hath pre-eminence in signification, when there be two signs have to do with the thing. - William Lilly (1602.-1681.)