Yes, talking therapies. Antidepressants are good at making you functional again but they can't go in depth into what happened to you.
I found talking and writing helpful. I talked to therapists, friends and strangers (taxi drivers) and wrote things down (a lot) until it all made more sense and all my feelings were acknowledged. Obviously I didn't share my a entire story in detail with everyone. Therapists heard the most details, then friends and then taxi drivers (other mums in cafes etc) heard a minimal but organised and effective version.
However, because this was in dribs and drabs I felt the need to have my story all in one place and started writing a timeline. Top half-the events, bottom half-how I felt. I carried on until I thought the story was complete (it took a few weeks). Afterwards if I started going over a particular point (whilst walking for example), I'd write notes on my phone. Everything and anything in notes, until each detail "made sense", each emotion was acknowledged (by me), any regret dealt with (ie events were random or there was no other option or I couldn't have known x etc).
I also organised nursery for 2 days a week so I could have time, first to sleep, second to slowly get back in control (ie not rush all the time, have a little space to myself). Not having some form of childcare/help I think would have held me back and it would have taken much longer to process everything that had happened.
Looking at what I've just written, it sounds like I was a woman with a plan and very much in control. It was the complete opposite. It's mainly from talking with therapists that I was able to formulate what was best for me (writing, reclaiming some time to myself to sleep and decide childcare was necessary).
I can't know what will work for you but by talking with a trained professional (psychologist?), some personal needs/wishes should slowly emerge. The birth trauma association seems a good starting point. They'll probably make suggestions. Asking your GP to be referred to counselling would be good too I think (earlier the better as waiting can take around 3 months before you see someone).
I wish you all the best.