Plus ask to have the aldesterone checked to see if you are low. If this is low that means your sodium is low.
Plus have your electrolytes checked. You are looking to see if potassium and sodium are in a good range.
I would suggest to add Sea Salt to all food you can tolerate for now. Sodium issues causes a lot of issue to. I had both issues, not saying you will have both, but make sure to get checked for both.
When is your appointment?
Marie
Ps. Tell the Dr your concerns for the testing.