What does your doctor say to do? I have a hiatal hernia and I sleep on at least 2 pillows to elevate me, or you can elevate your bed slightly too and that should help. Sounds like you had an esophageal spasm which feels like a heart attack. Do not drink anything with caffeine in it at night and don't eat for 3 hours before you lie down. These are just suggestions. Sounds to me like you could use another office visit and discussion with your doctor. Good luck!