Traumatic birth support

Is anyone aware of a support group for women who have experienced a traumatic birth? I just had my 4th baby a week ago and my birth experience this time around was terrifying, very different from my other 3 births. I tried posting in the birth stories but (fortunately) most of the stories are positive or they just didn't have the type of birth they wanted, I'm going through some post traumatic stress and can't seem to find anyone to relate.