Does my dreams mean something?

I tend to think we dream based on things we have experienced or things we worry about. Do you feel your life is crashing around you? That could be it. I sometimes dream things based on movies I've just seen with me in them. So I have dreamed stuff like this right after seeing a similar movie so that could be it too. Or, are you seriously worried about the end of the world? That could be showing up in your dreams.