Hi K.,
Welcome to the area!!! I am not sure which part of Walnut Creek you are in, but there is anther mom's group called Lamorinda Mom's Club...www.lamorindamomsclub.org. This group is for the areas of Lafayette, Moraga and Orinda, but I know there are people from Concord, Walnut Creek and Pleasant Hill as well. We currently live in Lafayette, but will be moving to Walnut Creek soon. I will continue to belong to Lamorinda mom's. It has great resources online and off. I am a part of a playgroup that the babies are all within a few weeks of each other! It is a lot of fun to have all of the babies around the same age. This may be the same with the Pleasant Hill/Walnut Creek mom's club, I don't know.
Where did you move from in the city? My husband and I used to live in Midtown on the East side. It is different out here, but we like it a lot better:) If you ever have any questions, please feel free to contact me at ____@____.com luck with moving!
S.