World not loading completely and is corrupted

My world is not fully loading. My house is totally glitched the walls are not there and same with the ceilings. My sheep and cow farms are also glitched. There is a very big hole to where my animals are now at. My cow fence is gone but you can tell it is a bug. My double chest is half gone but it still says "large chest" The ground is not even messed up where my house is at all so it is not a mob that did this.