I have been having pounding in my right ear off and on for the last 3 days. It happens around every 25 minutes. Sometimes, the pounding goes for about 11 seconds and then, it happens again in less than 2 minutes. It doesn't seem to be anything serious, but I would like to get an idea of what it could be. I started keeping track of how much it happens and for how long and in the last 3 hours, it has happened 9 times. Does anyone know what this could be?