In the case of hypoglycemia, chewing on two candy can improve dizziness, but this is only the case of the disease, we do not need to eat sugar every day, excessive intake of sugar is not good for health, usually we must pay attention to supplement various nutrients. Eat more vegetables and fruits and eat less processed and packaged foods. In this way, the problem of low blood sugar can be solved at the source, otherwise the symptoms of discomfort will recur.
Did your doc give you a glucose tolerance test? Any history of migraine headaches? It's a lot of symptoms and could be so many things, and there are no doctors on this forum, but sometimes doctors aren't the best at determining blood sugar imbalances unless they are quite large and noticeable. Lesser imbalances can have a profound effect on some people. But again, those symptoms could be caused by a lot of things, including medication. anxiety, digestive problems, nutrient deficiencies, thyroid problems, cardiac problems, to name a few and I'm not an expert. If you don't think your checkup was thorough enough, try a different doctor.