I have a few suggestions for you.
Try www.meetup.com or yahoo.com --> groups. There are lots of different moms groups on both sites.
If you're looking to find a place with other moms that are pregnant or with newborns, AND some good education on being a parent, I HIGHLY suggest checking out Woodinville Family Preschool at http://woodinvillefamilypreschool.org/index.htm. It's a co-op "preschool", but more importantly (especially at infancy stage), it's a parent education class. (There are different classes for different age groups, i.e., pregnancy - 6 months old, 6 - 12 months old, 1 - 2 years old, 2 - 3 years old, 3 - 4 [Pre-K].) You and your child are registered in teh class together and you're always with them or available to them. The infant/toddler teacher, Beth, is one of the nicest people you'll ever meet and the information that you'll learn in the classes is invaluable. I started there last year and I can't say enough good things about it. I've met so many other parents there as well, so if you're looking for something along those lines, this place is literally your jackpot.
Best of luck to you in whatever you decide to do! :o)
