Freezing and not placing objects

My game has frozen when I tried to save all 3 times I played in the past week. It will start when I try to place an object or delete something and it does not work. Like the object wont place/ the object won't delete. Then, I'll try to save and it will be loading forever until I have to force quit. It will also load indefinitely when i do manage worlds without saving. I have repaired the game and restarted everything, it keeps happening. Thanks! PS I have never used mods, and just got 3 new packs.