Shock in a dream is read as a sudden break in what you thought was certain. Tradition links it to news or realisations that unsettle the ground, and to the time it takes to absorb them.
Does the traditional reading fit your dream, or did it mean something else to you?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.