Question: Hi. I accidentally closed the previous thread. I have been on here before with bouts of anxiety in the past and have been having new issues that I am concerned about. A few months ago, I started feeling like I would get hot and dizzy sometimes. This has continued every now and then and a few days ago, I had some tightness in my upper back. Two nights ago, I visited an ER because I woke up with a pain in my upper left chest. It was a light pain that would come for a couple of seconds and then go away for a few seconds. This scared me along with the left arm tightness I have had for days in my shoulder blade to pinky. My ECG ended up being normal and monitored me for around 2 hours. The blood work came out normal with my Troponin (<0.05), myoglobin (36.4) and CKMB ((<1.0)levels being normal. They sent me home but now I am concerned that they did the blood work when I got there and it wasn’t long enough to see the numbers increase. They only did one round of blood work and iI have read that they usually monitor it when you arrive and again later. I’m not sure what to do. I did see my PCP early last week and all of my regular blood work was normal. I felt fine later on but still would still feel dizzy every so often.