When we flush the toilet or run water in our home there is a humming/vibrating sound after the toilet tank fills and that water shuts off. It started a few weeks ago and progressively gotten worse. Any ideas as to what the problem may be? I am trying to avoid the need to call a plumber if necessary. Below is a link to a video i posted where I flush the toilet and you can hear the sound. Thanks for any help or suggestions in advance.