I dreamt I was dead, what does this mean?

In my dream my sister and I were dead although I don't know how. My family were upset and could not see us. I asked my sister what are we supposed to do and she said 'Just wait around I suppose'. We went to school and the people there could see us. My friend was there and I said to her does she mind that I'm dead and she said 'No, you can still hang around with us'. What does this dream mean.

Death = End of a cycle. Something is finally over .