Can you provide more details?
Did you feel unwell the day you did not eat anything? Being hungry indicates otherwise. If you were not feeling unwell, why did you not eat for an entire day?
What were your circumstances & symptoms that day besides what you already posted?
Do you have any digestive or G/I issues in general?
Any other diagnoses/infections which might explain fatigue, nausea, acid reflux?
Not having anything to eat for a whole day, should cause hunger, weakness, dizziness, nausea and other symptoms of hypoglycemia.
IDN, something seems to be missing here.
Please post again.
Best wishes,
Niko