Rest assured that your fever has gone down. To provide a more comprehensive answer, I need to know what antibiotic was prescribed, the dose and dosage, as well as the other symptoms you experienced. It is possible that your pharyngitis and otitis were treated properly, but you may have also contracted a viral infection, such as a cold. I suggest consulting your pharmacist for further advice regarding your symptoms. Depending on the outcome of the consultation, they may refer you to a doctor.