The headboard is what you rest your head against, and tradition reads it as the support behind your thoughts. A cracked or wobbly one points to doubts about what holds you up.
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.