frequent urination and being exhausted.......symptoms of diabetes. You should check that out if they have not already. I know this is easier said than done...but, if that is what it is then you can go right to the source and start feeling better relatively soon. You will be amazed at how controlling blood sugars add to your energy and health. Like the previous poster said....it is really not that big of a deal. truly. Again, I know it is hard not to worry about the unknown; but, YOU will have the upper hand in CF IF you have the knowledge about what your body needs.