I've been smoking pot since I was 20 and I'm now 42. for the past 5 years, when I smoke, if its potent or I take to big a puff, I get a head rush that I think is similar to a stroke, but I dont know, I all of a sudden slump over, my left side feels numb and tingly, I cant focus my mind and I hear my brain, real loud, and sometimes voices or just wierd stuff, in my head, then it slowly fades and I'm back, my friend saw it ans said it looked like I was about to stroke out. is this safe?