I suffer from body memories too..I have been told by several Therapists that some how the body remembers..an energy is kept surrounding the incident..I have somatic nervous system responses along with the musclular where I loose my eye sight and other junk.

So I am sorry you are having to go thru these awful somatic responses..they are scary to endure, and make it hard to determine if you are having a real medical crisis or reliving/responding to a past trauma