There are many groups here that have discussions on this subject. Take a look at these two for starters, and look around for more. I actually think, even without your master, it will be revealed to you when you are ready.
I would suggest a cleansing with some sage and then afterwards a sweetgrass. Also if it's bad right now make sure of course not to smoke marijuana or do any more until you get things under control. A daily Banishing Ritual of the Pentagram will probably help a great deal.