pants! prego pants and postpartum pants!

Chloe
Ok so this might sound a bit stupid but I have no idea what kind of pants I should buy for after I give birth. I've pretty much gone commando since my bum and bump got sooo big. So I know they need to be bigger than usual. Would short style be a good idea? Will I be able to keep pads in them comfortably. So what do you lady's think?