My Game Completely Vanished from Existence

I was just playing Alistar support in a ranked game when I suddenly lost connection to the server for an unknown reason, not on my end because the others in my house were connected just fine, and the game is now no longer present in my history nor do I get a button or anything to reconnect to it. It just completely vanished from existence. The client allowed me to join another ranked game, as if nothing ever happened. Please help?