Not sure if this applies to you, but the Royal Women's Hospital in Melbourne has a designated Birth Reflections Service for women who birthed at the hospital. If you were at a different hospital, perhaps they also have a similar service?

Birth Reflections Service

I understand your need to talk to someone knowledgeable of your situation, but also independent of the events. Whilst my DH is aware of my disappointment/concerns, i don't think he truly gets the intensity of my feelings surrounding the birth. I think sometimes men focus more on practicalities/things they can fix and don't always get how debriefing an event can really be beneficial. If this is something that you still have questions about, i hope you can find someone who can help you get answers.