If it was a blockage there should not be any immediate threat, but the best thing to do would be to call the doctor who treated you. They're going to know a lot more about your specific condition than people on Eden! If in doubt about anything you should always consult a professional.
I'm assuming you don't have a pace maker. If you had a pace maker I would most certainly err on the side of caution and, if I did like electric play, only do it on the far extremities and on a very light voltage. Pace makers are scary, sensitive, and not a force to be taken lightly!