Yesterday i was giving my 5 year old yorkie a wash. Whilst drying it ,it slipped out of my hands and fell . There was nothing wrong and then I went on a walk with him , when coming back I realised he wasn’t using his right back paw. He can stand on it he is acting normal but you can see he doesn’t properly walk on his paw . I’m very nrevous about him and I don’t really know what to do