It could totally be gas...but sometimes I think I could be starting to feel something. It's baby #2 as well, and supposedly your supposed to feel movement earlier...
I've started to feel something going on in there. This is my first so I have no idea what it feels like, but I've had stomach issues since I was young and can tell what's gas and what's not, lol. Just not sure if what I'm feeling is actually baby, or things just growing/expanding.
Re: Flutters at 13 weeks?
Ditto - and not enough gas moving to make me comfortable either!