Dream of arresting, church, murder

I was making tea in the kitchen of my grandparents flat and looked out of the window at our local church. There were police, forensics and a grave was being dug up. I felt extreme panic as I knew I had murdered someone and buried them there on a freshly dug grave and I knew that I wouldnt get away with it. Then suddenly I am at home worrying and there is a loud knock at the door. When I andwer it to a cid policeman ha reads my rights arresting me for the murder of..........?? Always wake up before I know who it is. This has recurred numerously