I don not have diabetes went to doctor complain of fatigue and cold hands feet low blood sugar feeling. we did a blood Sugar test and it was normal he told me i did not have diabetes.

Here is my question due to my cold hands and feet is it possible that I have to much insulin in my blood at times. Im 5-9 162 pounds fit. Yet i still have these lethargic symptoms in morning. Insulin constricts blood vessels and can make you lethargic if to much is in blood at one time any ideas health experts?