objects gone

so yet another problem. I was playing with a family that ive made over 4 days ago, made a house with furniture and all that. Just went to play again today and while playing literally all the furniture and objects dissapeared in the house. My sim was still baking pancakes and continuing but i cant click on any furniture anymore and the baby is gone too because he was in the bed which also dissapeared because EVERYTHING dissapeared. I wasn't using any cheats while this happened