We have a pack n play with the bassinet thing and we plan for our newborn to sleep in that our first few weeks home (at least) until we're ready to move her to her crib in her room.

I'm wondering what other have done re: sheets? I mean the pack n play isn't really designed to have sheets but it feels odd to put her down on just the pad. Wondering if I should lay a flat sheet down, or a thin blanket under her? Is that even safe? (Sorry if this is a stupid FTM question or I'm over thinking... but I know they say nothing in the crib but baby!)