I'm much more nervous this time around as well! I guess because the first time ended up being really straightforward after all the heartache of TTC, so I've convinced myself something will go wrong this time because getting preggo happened so easily. Daft I know, especially as I feel exactly the same as last time (in, fact, a little worse at times).
And yaaaaay, go Erin! Very exciting milestone. I'm dreading potty training already, we're a long way off though - my lad just mastered walking, not even close to talking (I'm sure he could if he wanted to but he's so stubborn, won't do anything until he's 100% sure he's cracked it). Having a toddler is making the early stages so much harder too, I'm permanently knackered. But very excited!