My pcp doc has recommeended that I keep the next appt. with the endocrinologist.
I have to have some tests she recommended but she basically said what my pcp has said I have to do: have no more than one quart of liquid a day until my low sodium is back to normal. Hard to do this but I wake up each day now ready to try.
This morning was particularly trying because I was craving a large glass of cold orange juice. I am alieviating this craving with ice chips.
Hoping this thing can go away soon.
= new reply since forum marked as read
My mom had that about 8 yrs ago, it took them almost 2 weeks to diagnose it. It's scary, but you can fix it. Good luck CTyankee! 
She had Alzheimer's, so the battle over her liquid intake was up to me. Had to watch her like a hawk. Since you have all your faculties, it should be a easy peasy!
Aw, thanks for saying I'm sweet. I just like to help if I can. 