Yes, this sounds like pretty classic hypoglycemia. The difference between this condition and diabetes is this: in Diabetes, the body's pancreas does not make enough insulin to covert carbohydrates that are eaten into energy. Without insulin, these sugars build up in the bloodstream and the person becomes ill. In Hypoglycemia, the pancreas makes too MUCH insulin at times, and this overdose of insulin, if you will, causes the symptoms you describe.