well the Padme @ 4 months pregnant could just be how it shows on her. Not all woman blow up like a balloon when they are pregnant, some remain relativly thing and you dont necessarily notice they are pregnant, while others looke like their are carrying quadruplets when in reality its only 1 baby of 'normal' size (ie not a big baby)

but ill give you the 2 month old thing...maybe thats how he explains the death star thing, it was really only a few years, but those force sensative babies just grow up oooh so fast.

-Darth Simon

haha, i had to edit cause you edited while i was posting...its very possible...it would explain why Anakin really didnt seem to be too happy when Padme told him she was pregnant.

also, when did he say 5 months? i thought he just said it felt like a lifetime