I deal with heart pain just about daily with my PTSD and I found this article on the subject. Emotional pain can cause bad chest pain like I feel all around my heart. I don't feel it in my actual heart but all around it. It hurts pretty bad sometimes. My PTSD has now taken a physical turn like never before in the past. This is the article about emotional pain causing physical pain.
https://www.scientificamerican.com/article/what-causes-chest-pains/
https://www.scientificamerican.com/article/what-causes-chest-pains/