Sher, I am suffering from something very similar at the moment. I saw an out of hours doctor two weeks ago who said it was an ear infection and prescribed some antibiotic drops. A week later it was no better, saw my own gp who said it was now a chronic ear infection, took a swab and changed the ear drops. I am waiting for the results of the swab to see if it's the right antibiotic. The gp also told me I may need a hospital appointment with the specialist nurse to have the ear washed out properly as there's a lot of discharge inside.
I've had little or no earache and no noticeable discharge on the outside, just a sudden totally blocked ear.