Lagged out of Game and can't reconnect

Today I was in the middle of a ranked game when I got disconnected. It was roughly at 13 minutes when this happened. When i logged out and signed back in an attempt to reconnect, the option to reconnect to the game wasn't there and instead I was at the League home page. There is no history of the game in my match history, as if the game was never there. I attempted to log out and back in with no success. I'm concerned for my account because I don't want to be banned for afk/leaving the game when in reality I was just trying to reconnect.