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is used to treat bacterial infections. Influenza
(flu) is a virus, so I doubt the antibiotic helped with this disease process. If you are having throat issues, perhaps you had pharyngitis
(inflammation of the throat) in which case, the amoxicillin may have helped.
Your body is telling you to take it easy. Your tastebuds have been altered by your sickness. This should ease up in about 10 days, the time it takes for a turnover of tastebud cells. Until you are feeling better, I suggest a bland diet such as the BRAT diet: Bananas, rice, applesauce, and toast.
If you are still feeling bad after 3 days, contact your family physician.