I haven't! But then again, I'm a guy.

Seriously though, welcome to PC. It's often helpful when these little spurts of depression come on to make yourself busy. I know it seems trite, but you'd be amazed what you can find to take the free time off your hands. In your case, you really only need to do it for a couple of months because something tells me that after that, you'll be WISHING you had free time

I suggest origami, which is peaceful, cheap, surprisingly time-consuming and after you're done doing it, you have a sense of having had created something. Origami.com is a good place to start. (note: I'm not a lobbyist for the origami cartel or anything, I just see it as a good thing to do for someone who's 7 months pregnant.)

Congrats on your 3rd child, and try not to worry too much. You recognize that it's more than likely hormone influx and not a permanent issue. Doesn't mean it's easy, though, so don't hesitate to write when you need to. I've only been here a week or two, and it's been amazingly helpful (except I'm a little compulsive in checking it).

*hug* and Good luck!