I packed mine when i went into 'spring clean mode' which was about 34 weeks, it is the strangest thing when you have the urge to nest! My little girl came two weeks early, so it was only a few weeks that my bag sat there and it gave me the opportunity make sure i was really prepared. I also think doing these things when you feel up to it is important, because this is an exciting time - do what you want when you want to!

Congrats on your impending arrival and goodluck!