I have a chronic pain condition and the pain is far worse when I'm very stressed.
Emotional pain feeds physical pain. You have talked about your unbearable pain which has manifested itself in various parts of your body but nothing has been diagnosed as yet? Despite a whole barrage of tests. The mind-body connection is very powerful. I know you won't believe it but have a read of Dr John Sarno..even if you dismiss him out of hand? It's something to think about in view of your whole range of physical symptoms..