Mommy groups in Portland?

Breann • Mom of 3!
Does anyone know of any mommy groups in the Portland area? Or have any of you ladies met up after having your little ones? I have a 2 1/2 year old and a 4 week old and am looking to socialize a little bit even if it's just for an hour coffee date. I'm still fairly new to the area and have no idea where to look. Thanks in advance!