Guys, guys, guys... listen up. if you experience chest pains, get the sensation that you can 'feel' your heart beat, sometimes sharp and harsh, sometimes dull and achey chest pains, sometimes spreading to the neck and one or both arms, and fast paced paranoid or afraid thoughts, then you should see a doctor because you probably have an anxiety disorder. and weed being the hallucinogenic plant that it is can make matters alot worse. after you stop toking up for awhile you will realise its not the end of the world and you can still have just as much fun not stoned. worked for me, i found that hallucinogens arent very reassuring with chest pains so i tend to keep away from ganja, acid, ket, shrooms, and dxm especially. however, stimulants are always good and never have any problems, let me know if this helps.