I have had a minor sore throat and ear ache on the right side for more than a week, along with sore knots on the crown of my head neck, right face and jaw, and swollen lymph nodes. I got a diagnosis of cellulitis and a prescription for Cefdenir 300 mg on wednesday but am getting steadily worse-now have fever and headache. I work outdoors-ticks, mosquitoes, assassin bugs around here