I totslly understand. I have had 30 heart procedures of all sorts and 32 stents. I know what the fear is all about. I take Restoril when I can't sleep. It tends to help get your cycle of sleep back. I have taken ambian but it knocks me out too much. I also take xanax to get through the anxiety attacks. It works like a dream. Anti depressants can also be important because the act of being depressed and anxious releases hormones that are bad for your heart. Just remember you are not alone and the fear is real. If you are not happy with your doctors get a new one. I have the best. I have gone through many of them and the doctors I have had at OU Med Center have been the best so far. They really care.