You might be having pharyngitis
you can take
+Clavulinic acid 625 mg three times a day (you are taking amoxicillin so giving a better salt)
Tab. Chymoral plus three times a day for 5 days
Tab. Ebastine/Loratidine/Acrivastine + phenylephrine/pseudoephedrine
two times a day
Tab. Acetylcystiene (Mucinac) 600 mg once daily
do take multivitamin
and eat fresh curd.
in food take nonspicy food and soft diet
and the food that is at room temperature .
report back after 5 days.