Your mind may be awakening! The smoke fog's the mind as such it represses dreams and activity that a long-time user forgets is normal. You have a mind back-up and as the chemical is reduced in your system, your system returns to the normal ways you may have forgotten about such as dreams, repressed dreams and more dreams. Eventually they will subside and you will get used to the activity of a clean mind!
I have never experienced withdraws from cannabis, and neither has my sister ans she smoked it for over 12 years before she quit.