I know low D can cause issues and I started supplementing recently. I feel it is helping a little, but I can already tell it's not going to fix this whole problem. I also have a ton of other symptoms going on which are awful. I have neuropathy in my legs, feet, and if possible I also have it in my mouth and throat. I get this horrible burning pain all down my throat and on my tongue.

I feel your pain. This is a horrible thing to deal with everyday. For both our sakes I hope it is the D, but it can be caused by so many things it's hard to tell.