Suggest Medication For High Fever And Swelling Of Throat After Swallowing Fish Bone

Hi 4 days back my 14 month baby ate fish bone but he was quite well on that day.after a day he develope high fever, and i went to the gp he found inflamed throat, and gave antibiotics. but without giving tha antibiotics fever interval was increase.today is the fourth day he is having fever 38.5 the same spike as earlier but he is eatint and drinking as earlier. but some time he put his finger inside his mouth and trying to nausiate. he vomited twice after his meal. what can i do for this