Hi,nothing to worry,you are in the recovering phase.this can be due to upper respiratory infection
.during an infection you tend to have an mucosal edema which will lead to blockage of the ear. as the infection settles, the edema too settles and the blockage might get relieved. so aadvice you to continue antibiotic for about one week.salt water gaurgling would help you in relief of you sore throat
.if symptoms persists you should see an ent surgeon for the expert examination.