Mommy support groups?

I'm a first time mom, who happened to have depression before hand, and at this moment I'm going through a lot so it's horrible...

My husband, as wonderful as he is, doesn't know anything about depression and doesn't do too well at helping me through it. I just wish I can vent without feeling so guilty... so if anyone knows of any mommy groups maybe it can help?

Also it's not post partum, I'm still pregnant just dealing with some health issues.