He is still sweating profusely but shivering and cold. Tested blood glucose and it was 130 which is good I think, since he's had very little to eat. He's started to say his vision is blurry at a distance. He said his heart is pounding hard, and is weak to stand. His finger tips are numb. We are all a little scared at that right now. Called the CF doctor on call again but considering taking him to the ER.