Hi Pilgrim,
I'm so sorry, sounds like an astounding amount of pain. I hope you get good days, good hours.
I'm not a doctor, not a therapist, only a person, so... just my two cents based on very bad personal experience:
I've got c-ptsd and only found this out on my own a couple of months ago. My whole life I didn't know what was going on with my body and mind. For double whammy (I'm totally with you there!) I also have severe physical problems leading to physical disability, resulting from abuse and accelerated and worsened by abuse and by stress. But for decades these were misdiagnosed, explained away as psychiatric by mistake, over and over till it was too late to treat them.
It seems to me that conversion and c-ptsd could share many symptoms, so it makes me think of Ockham's razor. Did your doctor/s consider the possibility that a newer diagnosis of c-ptsd may explain all your symptoms? Just in case it can.
But if it can't then welcome to the forest of unicorns. I'm one too.