I don't want to add to your misery, but your post last night made me laugh out loud.
My mom was TWO WEEKS LATE with my brother after having me, but then popped my sister (her third) right out so I'm not sure what to tell you, but you're not alone in thinking the whole "second and more babies come quickly" thing is crap.
Oh, and DH wants to name our kid ARNO, not Arlo. Arlo I could handle, but Arno?? WTF?!?