Packing my hospital bag:

Do you think I should bring pajamas I only have pajamas that I really like lol and I don't want to have to throw any of them away? So do they get ruined? Cuz if they do I'll just use the stupid hospital clothes for the hopefully only two days that I stay there. Ps I don't see why they would get totally ruined probably need washing but ruined? Any advice appreciated thanks! Also a how many outfits should I expect to bring for both baby and I Incase of getting dirty etc? Oh and also the breast pump do I really bring that?