Otitis Media. My ears up quicker?

So on Monday I started getting really bad pains in my right ear to the point of which I was in tears, later that pain ended up being in my left ear too. I got myself some over the counter antibiotics and took them over 2 days, they helped with the pain however at this point my hearing was very muffled and it wasn't clearing up. I saw my GP and he said my eardrums had swollen which is why I was in pain and why I couldn't hear, he prescribed amoxicillin for the swelling and a penicillin based medicine for the pain. He also gave me a information sheet on otitis media, as he thought this is what I had due to me having a cold the week before meaning the mucus had built up in the middle of my ear he stated that it would clear over 2/3 days however, 3 days later it has not improved, if anything, my hearing has gotten worse. I just want to know how long will this last? And if there is any other option to clearing my ears up quicker? Thank you.