Wow! And I thought that I was the only one who had this kind've experience. All my friends in high school smoked marijuana except for me - although it does mellow you out and perhaps does have a calming effect - "I" always became really paranoid! Not paranoid of anything in particular - just paranoid! I think this is the same as what you mean by "anxiety out of control" and "kinda scary."I have GAD and when I smoke it increases my anxiety out of control... makes the whole experiance unpleasent and kinda scary.
My only anxiety is when I run out...