S.C.
Jewish Family and Children Services of Greater Boston runs a number of new mom support groups throughout the Boston area. These are free and open to all--you do not have to be Jewish. Here is their website: http://www.jfcsboston.org/fcs/support_groups.cfm
I attended the one that is held in Arlington on Fridays at 10:00 at the Calvary Methodist Church on Mass Ave. The coordinator was wonderful, and it was a really great experience. I highly recommend it to everyone I hear who is having a baby. I'm still friends with many of the women that I have met through the group!