Cold feet purple toes light headed dry mouth thirsty headaches hungry yeast infection (s) tired all the time hazy vision?

Multiple symptoms. First and foremost, please make an appointment asap with your family or internal medicine doctor. The symptoms you describe could be signs of diabetes or other metabolic conditions.
Diabetes Mellitus. Tested by checking the blood sugar, diabetes mellitus can cause elevations in glucose, in turn causing mental confusion, changes in the lens of the eye, lowered resistance to infection, polydipsia (excessive thirst), polyuria (excessive urination) and vascular changes. Present these findings to a physician, and the first diagnosis to rule out is hyperglycemia, gestational (pregnancy) or otherwise.