Dream Premonitions Options

This might belong in Dream Works, but as my questions that go with this are about the prophetic side, I've posted this here.

Last night I had many dreams, not a one of which was not a premonition. I saw my future, my father's future, an ill fate for my dog, my friend's alcoholism taking a turn for the worst, and an old crush who I still talk to excelling in her chosen career.

My questions are:
Are these things just what is most likely at this point in time?
Would my fate, as I dreamed of it, be taking into account the fact that I dreamed of it?
Being as these dreams all came together, would changing one of them likely change them all?

For me dreams can definatly hold premonitions, but they've always been heavily draped in symbolisim. I pretty certain I dreamt of the Utoya island massacre within 36 hours before it happened but there was no way I had any idea about the location and I missed the clues to that it involved killing. Its only; 1. the strength of the dream, and 2. seeing real images of places at the scene which were in the dream that I'd never seen before. I'll hopefully learn enough from these sorts of things to refine what I can predict but at this stage most of my dreams seem to be my imagination running wild.