I have been smoking weed since I was 18 I m going on 34 on day i smoked some weed and had a panic attack. I have made to stop. I had to go to the er. Because i was scared . come to find out i had some bad weed. Since then i get them every now and then how long will this last. Never had attacks until that day. I no longer smoke now cause of this. Will the attacks stop when he weed get out my system.