My 3yr Old Baby Is Having Fever From Last 8days.she

My 3yr old baby is having fever from last 8days.she has completed antibiotic course azee 200 and side by side she was having Ibugesic whenever she was having fever. But when medicine she was taking immediately body was cool but again after it starts warming n then high and high.went up to the temp rise 102.8. Today had a blood test.