The symptoms you reported are not specific enough, but an attempt to suggest diagnose can be made. The symptoms (shaking, temporary loss of memory), the list of family related illnesses, the time of the day (morning-hungry) might indicate that you have experienced hypoglycemia. Hypoglycemia is a condition in which the blood sugar is decreased. In most cases, it is related to diabetes. You might want to visit your family doctor for simple laboratory tests that would confirm or rule out diabetes.
If diabetes is ruled out, your doctor might want to refer you to a neurologist to check for some neurological disorders.