Last night when I got home from work, I sat down and i had a very tight squeezing in the left side of my chest. this squeezing went from my chest to my arm and up into my neck. I also felt like I was going to vomit. I was so afraid to move that i fell asleep in the chair I was in.. today, my chest still has a some pressure but not as severe as last night. I called my doctor they advised me to go to the E.R. what should I do.