Hi, I really feel for you, you are going though hell, I am no doctor, but it sounds as if you are dealing with all your problems at once. In my humble opinion I think it might be beneficial to seek the Drs help for advice on how you could try to relax, while addressing the heavy issues you are up against.
Pressure is a terrible thing, it needs somewhere to go - harmlessly. I have screamed into a cushion before now.