Looks like you really had a very very bad situation in your life. It is one of the disease which is difficult to explain by the doctors. And patients are also not ready to accept that they are "mentally" or psychologically" it. They will keep running from doctor to doctor, hospital to hospital to find out "what's the physical problem"!
Good thing happened to you. You were referred to the proper place and you accepted what's the problem. And ultimately was able to cope it.

This is really good lesson for everybody who are suffering from anxiety disorders.

Tips for newbies: How to give a fractional upvote when your SP is below 500?