Your symptoms are suggestive of reactive (postprandial) hypoglycemia, where blood
sugar drops a few hours after eating, especially after meals high in refined carbohydrates. A sugar reading of 72 mg/dl is on the lower side (though not dangerously low), but combined with your symptoms it indicates that your body may be producing extra insulin after meals. The fact that you feel better after eating again supports this.
Next Steps
Maintain a food and symptom diary for a few weeks.
Prefer small, frequent meals every 3–4 hours.
Choose complex carbs with high fiber, protein, and healthy fats (whole grains, pulses, nuts, vegetables) instead of refined carbs or sugary foods.
Avoid skipping meals, excess tea/coffee, and processed snacks.
Stay hydrated and get regular exercise.
If symptoms persist, consult a physician for further evaluation (OGTT with insulin levels,
thyroid function, etc.). Rarely, other endocrine/metabolic causes may need to be ruled out.