Freezes and won't read game

So it worked this morning and its the afternoon now and when I turned on my 3ds and selected animal crossing game it foze.. It was like that for a while so I turned it on and off a couple times and it had the same results so I searched and one option was to turn off WiFi and it worked.. Until now I'm attempting to play again and I get same result. So I took game card out then tried turning back on and it wouldn't read game card. Note I have a clear plastic case on my 3ds and I had dropped it about 3ft on concrete yesterday after noon. Its been about 24 hours but it still worked after I dropped it