[how can I get my textures and inventory back]

I have lost quite a lot of my inventory, including textures, scuplties and countless other items that were expensive.  How can I get them back.  I have already done the clearing cache with no luck. 

[I keep get a line popping up on my screen in the living room of my house saying "mattress request"]

I get this "mattress request" when I am in one part of my house.  If I leave the room it goes away but never goes away from the room.  It is annoying and I want to find out how to get rid of it.