Last night I was in the emergency room. My left arm was hurting so the 1st thing that came to my mind was a heart attack.. They only did blood work and said that it wasn't a heart attack that I'm too young.. I'm 28. Don't know if I should believe the Dr or go to another emergency room.. For now I can't make an appointment with my Dr because I just switched to a new one and won't be able to go till next month.. What do I do?