I am headin to Chicago for a work conference in October for a weekend. I am goin to have to pump while I am gone- how do I transport my milk back home? I know there is a fridge in the hotel room- but not sure there is a freezer. I wasn't planning on checking a bag and carrying my pump/ cooler- can I bring my milk on the plane? Should I transport it in bags or bottles? Any ideas/ suggestions are appreciated!