I have had something similar to you. I found that there is something going on in my eustacian tube behind the eardrum. It improves when I avoid coffee, and use steroid spray up my nasal cavity. Also, using benydryl at night for a few days helps a lot. I have a theory that an acid build up in my stomach is irritating my throat and ear canals and produces an inflammatory response behind the eardrum. I find my ears get itchy also and if I avoid certain foods and caffeine it gets better. Also, try a few days of antacids.