@LeahhChelseaa90 It sounds like you've created several different saves, not just different households. When you click New Game on the Main Menu, you're creating an entirely new save with nothing in it except for the EA premade sims and lots, all in their original state. What you've done in other saves doesn't carry over.
If you want to have everything in one save, you'll need to save all your sims and houses to the in-game library. (You don't need to use the Gallery.) Load the save you want to keep, then add the lots and sims to that save through Manage Worlds. The sims added this way will keep their skills and jobs, but they won't know anyone in the new save.
In the future, if you want to add a household to an existing save, load that save first, go to Manage Worlds, and use the button in the lower right corner to create new sims.
