My husband came home from work, went to change clothes for evening before dinner. He is diabetic, injects insulin twice daily. When he went to inject before dinner, he suddenly became disorientated, walked slowly, did not respond to my questions. He then began to sweat profusely. I got him to sit down, would not answer me. I gave him food to eat, was better within minutes of eating. He is okay now but I am confused if I need to call doctor. We are in middle of blizzard, not sure if I should have called 911. Help.