A hangover is traditionally read as the morning after a choice — the cost that arrives once the excitement is gone. It often reflects regret, tiredness or a wish to recover from something that ran too long.
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.