A question mark is read as uncertainty and open curiosity — a matter still waiting for an answer. Seeing one loom large suggests a question you have been avoiding asking.
Where in your waking life have you met something like this lately?
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.