Therapy takes time and every doctor operates differently. The one thing they all seem to have in common is that they want to start slow getting to know you before diving deep into issues. That being said, my therapist and I have been working together for quite awhile and while he will definitely listen and give advice on the matter where he can, he has clearly pointed out that he doesn't specialize in this kind of trauma. He gives resources appropriately, but ultimately I know he wants me to seek help from sources who can relate, or have appropriate training.
I had shrugged off what happened and honestly still have difficulty calling it what it is. It happened a year or two ago. For the last 8 months I've been in a relationship and I noticed what this forum calls triggers and I figured out that it was because of what happened in the past. So I knew I needed to work on it and come to terms. It wasn't however until my boyfriend moved in with me that I realized how badly I needed to figure all of this out. Going from long distance to living together means the opportunity for triggers goes up significantly. So that's what spawned me here.
Also, sorry about the head injury! Hopefully you are recovering well otherwise?