I have lucid dreams occasionally not meaning to. What I have been frightened for 2 years is, My father was killed on his first day of work b/c of a heart attack, what scares me is the night before I had a lucid dream that involved him having a heart attack and to this day I wonder if I could have prevented it somehow. And 2 months ago I had another lucid dream that involved a friend living 6 hours away would come and visit, we went into a Subway to get some sandwiches he got a philly cheese steak which in the dream I thought was unusual. Just a few days ago he came down to visit and we went to subway and it played out word for word what was said in the dream. I just need to know why I am having these dreams and if they are normal