It is common to dream that you have had or are having a dream.
You could be experience a false awakening, in which you dream that you have woken up from an earlier dream, and are performing the activities you normally perform on waking, such as getting dressed and brushing your teeth.
Such a dream can be a sign that you have fallen into a rut in waking life.
You may also have a lucid dream, in which you are aware that you are dreaming while you are having the dream.
The meaning of a lucid dream will depend upon the content of the dream.