A weird dream

My father started having health problems while I was away on a trip to New York. I was sleeping in my bed at the Radisson the night before I was to give a speech for a conference, and had a very vivid dream that he appeared in my room. In the dream I wasn't too surprised to see him, though a little scared for some reason. He tried to talk to me, but he was having a hard time saying anything. All I really got from him was "I'll be all right." Then he vanished. The next day during the conference, I got a call from my mother saying my father had passed away the night before, at the exact time that I had that bizarre dream. Some things cannot be explained.