Hello Sir, My Son Is Now 14 Months Old &

Hello Sir,
My son is now 14 months old & about 9.5 kg.he is suffering with fever from yesterday evening and temperature increasing now it is 103f. Forehead is very hot compare to all other body parts and crying, Today at 12.30pm we went to doctor...he advised Meftal-p 5ml@3 times a day. we had given 1 dosage. it is now 2Pm but temparature was 102.5. Please advise any anitbiotic to control fever. Today morning he was active but now he was very weak and unable to stand also. baby didn't pass the motion from yesterday. but Urinate every 1 hour.