This is a nice website, and it has helped me understand a little more of what im going through at the moment i've been smoking marijuana for at least 9+years now and smoked at least a quarter(7grams) a day for a good 5years and have had no problems with it and have some of the best times of my life while chilling with friends but now im feeling the mental effects . When i first started everything was fine, i'd get the paranoia you guys/gals are talking about but it was only minor and i knew it was only the drug so i would just block it out. But now I been having anxiety attacks, i cant really say this is related to weed but it seems now every time i smoke up i begin to feel uneasy and my chest is constantly going tight and i feel my heart rate going up tremendously which freaks me out, i find myself constantly pacing about the house trying to take my mind off the uneasiness in my chest and stomach, there is also the occasional time after i smoke up where it feels like the world is "caving" in on me and i get a slight tunnel vision for a moment then the brain "explosion" one of the previous posters had mentioned after one of these episodes i feel very light headed and sick as if im gonna vomit. sometimes i get trembles while sleeping and my right foot and arm will go tingly for no apparent reason making me freak out more (thank god its not my left side or i'd definitely freak the %&@ out lol) I find breathing deeply or going for a walk outside does alot of good for me and sorta will relieve the sense of panic going through my brain, but the tight feeling in my chest always seems to be there i've been to the hospital for this and they say its just anxiety and well im no doctor so im just gonna stick with what the professionals say. This has been the first time i've been through an anxiety attack and honestly it felt like i was going to die or having a heart attack or something this feeling of uneasiness usually seems to disappear after the high has burnt out but im still getting random cramping pains throughout my chest and abdominal area. But reading this forum has made me feel a lil better and that im not the only one going through this horrible feeling.