Hello Doctor, My boy is 2years 8months old. He had mild fever and knee pain in one leg . Dr suggested antibiotics. while taking medicine he is good without fever and knee pain. But, again during the time of medicine, the pain and fever starts. For the past 5days given antibiotics . Now no fever, but the knee pain still remains. please suggest me , what to do ?? Dr. had taken the ultrasound scan of hip and leg. it's normal