So, I was back in ER tonight with severe shortness of breath and intense chest pressure that lasted longer than two hours before I went in. The result - "it is not a heart attack or PE. Go home, but comes back if something changes or gets worse." It changed, it got worse, so I went in. Yet the same ole same ole happened - nothing! (Except for me to be a human pin cushion; I am a hard stick and it took 3 nurses 40 minutes and 7 sticks to put in an IV line that thankfully was not needed.) Sigh.