i smoke marijuana occasionally, and im not sure if im just being overly paranoid or if there is something to worry about. after i smoke pot, my heart beets extreamly fast, and my chest hurts a little. i have a strong family history of heart disease , my father has had 2 heart attacks by age of 50. i have a heart murrmer which i have had since i was born, and have been told it proberably isnt that sever, but it was never tested. i smoked pot for years without having any problems, and quit for a month, i love weed and would like to continue smoking an occasional user, but after i smoke it, the paranoia of my heart bothers me. i dont want to quit, because i like the high, and the stress relief it brings, and allows me to sleep and eat, i know that smoking weed increases your chance of heart attack by 4 times within the first hour, but that doesnt seem to bother me enough to stop. does anyone have a similar condition who can give me some advice on how to calm my nerves , thanks