Hi Ruthy, just wanted to add my welcome!
I cannot even begin to imagine all you have been through! I am nowhere near as bad and you have all my sympathies for everything you have endured! Good luck on the upcoming surgery, and please don't feel alone. While most of us may not have experienced everything you have went through, we all, in some shape or form have experienced different parts of it. This is a great site for finding answers, gathering information, and just being able to vent about what you are experiencing.
I pray that they manage to get this under control for you.