Usually, neuropathy first affects the nerves in the limbs or possibly the digestive tract, but you are not mentioning any tingling in fingers or feet (which would be more typical of
neuropathy), nor are you mentioning other classic
symptoms of hypoglycemia such as sweats, shakiness, hunger, weakness, confusion, etc. Head pain itself is not a typical symptom of anything that is diabetic-related that I personally am aware of, although a headache can happen if glucose levels drop too low.