Hi Chirley,
Very positive that your kidneys function well!
Your increasing neurosymptoms with confusion and other brain symptoms, pain and problems with your left leg are no good signs.
The finger-nose.finger test is a test of coordination.
http://www.neuroexam.com/neuroexam/content.php?p=36
Incredible that a neurologist at a public hospital has a waiting list of 5 to 4 years! Too bad that you can't find a good neurologist privately. Hope you and your GP will be able to find info about what is happening to you!
Kind regards
Birgitta-A