In old dream dictionaries, dreaming about an ambulance could be labeled as a dream of warning. In more modern terms, your unconscious mind may by attempting to convey information that you have been unwilling to deal with consciously. Pay attention to your physical body and see if your health is an issue. Otherwise, this dream may be pointing to some urgent situation in your life. Consider all of the details in your dream. Examine your daily life and make an attempt to see if there is something that requires your immediate attention.