to me it really sounds like electrolyte issue, not hypoglycemia.
Try a teaspoon of sea salt in water...drink it slowly...how do you feel? This might fix the whole problem.
Add some magnesium citrate. Try some potassium, you can buy it in the USA as "Litesalt" or "Nosalt". Make sure you don't have kidney disease or take medication or else talk to your doctor first.