on monday i had an epidural for low back pain L-4-5 for spurs growing into nerves. i wound up with headache from hell, later extreme nausea, then faint, and what appeared to roommate as seizure. i felt my heart stop...and i was out. faint, gone. roommate is a boat captain trained in cpr, could find no pulse, not breathing, so started cpr and chest compression, after about three minutes, i started to wake. very weak, covered in cold sweat, know my blood pressure was in the tank. he got me to my bed, where in about 15 minutes color started coming back, but felt horse whipped. i was patently frightened, so made him stay with me though the night. whar's your best guess?