Everything is gone and disappeared

This update got ride of everything thing i had and when i mean everything i mean everything the only thing that is not gone is the stuff in my inventory and hotbar all my villages in my village are gone all my pets died for no reason I'm made and my Y level changed for Y:32 to Y:128 I'm so mad but also it just came out so plz fix this a fast as you can i also seen the caves they look very cool but all my stuff is gone from all my chest