My ringer slide in 'Settings' has dissapeared

[GlebG]

I turned off my ringer before Church and a few hours later the option has disappeared. The Vibration option is still there. I have a Nokia Lumia 920. 3.1 became available Friday and after a download that did something to get my 920 ready I eagerly installed 3.1. I've had lots of trouble getting Cortana to do anything interesting and 3.1 wiped out the previous podcast system.
Right now I want my Ringer back before I start to miss calls Monday. Thanks

 

[MDK22]

press the volume UP button - you'll see a dropdown to control your ringer, etc.