Have had bronchitis finished doxycycline now have terrible pain in one ear hurts to move head or cough. Pseudophed no help took Mucinex (guaifenesin). Still bad?

Ear infection. The doxy may have helped if you had a bacterial infection involving your chest, but it not a very good antibiotic for an ear infection if that is what you have. You need to have a doctor look at your ear and decide if you need another antibiotic.