John's dream...does it mean anything?

This morning John told me he had a dream. A dream that he went back in time. He wanted to tell my Mother not to have the Gastric Bypass surgery...

"I dreamt that I built a time machine to go back and stop your Mom from having the surgery. I went back and she refused to believe that I was from the future, so then I went to the day she died and tried to get her to go to the hospital, still she wouldn’t listen, as a result I relived the day again, having to make all the calls I did that day. I woke up crying hysterically." ~John