It's really common for people who discontinue weed to get more vivid dreams, especially in the first week or two after stopping. It does level out after a while. (I've taken tolerance breaks several times and have more recently all but quit for about six months now.)

When I have to chill on the weed I get the worst dreams, it's either floating heads outside my window, spiders, or sleep walking. It'll always start the same, with me falling asleep but the dreams start with me in bed trying to fall asleep and then spooky shit happens. I'll jump out of bed, rip off the blankets looking for spiders and really piss of my girlfriend. At least she knows the difference between awake me and sleep walking me. Because only one of those throws shit around then room looking for the window screen to keep the heads out while accusing her of hiding it. May have called her a bitch.