I'm sitting here watching TV and out of the blue I feel like I'm having a heart attack. I've had anxiety most of my life but this is weird. Back in April of last year I went to ER for possible heart attack. Tight chest, deep breaths, can't catch breath, etc. They did every test under the sun and came up with nothing. Said it was just my anxiety. Well it happened again tonight really bad. It's actually worse at night. Does anyone know if you can have angina where your chest feels tight while lying down? How do I know if this is not angina?