I don't know if I have the same problem but ever since I was a kid one of my ears would plug up and everything sounded funny like I was under water.been to al kinds of doctors.turns out all it is is water behind the ear drum.the symptoms were not always the same.my ear would echo,hurt.sound like I was under water,extreme pressure, make strange noises that other people could hear,it would come and go. The only thing I foumd that works is a netti pot this cleans your sinuses it works every time you can get it at any pharnacy don't know if this helped but good luck