i did the night before last. all the pain was in my throat and under my tongue. luckily,(i guess), i was present with my cousin when he had a heart attack with those same symptoms, else i might not have gone to the hospital as quickly as i did, (my wife being out of town i might not have gone at all). as it is, i went right away and it made all the difference: i had an artery 99% blocked, but they quickly stabilized me and put in a stint. i have another one 70% blocked, but they said things go best if they deal with them one at a time. doc says my timely response to the symptoms (15 mins. i was in the rescue squad, 15 mins. after that in the emergency room) is the only reason i have escaped with little or no damage to my heart. so, go ! don't mess around. if it's a false alarm so what ? don't join the heart attack club and be one of those who never gets to hang around for the meetings!