I did somatic therapy for several years and this is exactly the kind of experience we would explore - how the body holds tension, how the body gets stuck, and how allowing the body to complete its traumatic process can allow release and subsequent relief. Completing processes was always a really slow and careful piece of work. You mention your voice and that's interesting because I did a lot of work around my throat and mouth - how I can hurt with my words and this is where a lot of my nastiness is held and then spat out. And is also the site where I would get recurring physical infections. So it might be parts - I am sure that some parts can be more associated with different somatic experiences - and it might also be your body communicating about trauma.