I have Addison's disease, I am pregnant and my sodium is low. All other blood values are fine and I take medication as usual 0.2mg of Fludrocortisone. Has anyone had this issue? Should I increase Fludrocortisone? I seem to get sick with sodium levels of 131 which is within the normal range which means that I wait until I am really sick before I go to hospital to ensure that I get treatment (I am sent home with a level of 130 and above). My endocrinologist is of no use. Does anyone have any advice?