OP, I know you've got tonnes and tonnes of posts supporting you already but just wanted to add to the masses
We spent ages TTC my DS but nothing prepared me for the reality... My labour was horrific (although sounds like you're was also very traumatic). Afterwards we were moved to a private room and DH had to leave briefly to sort out the dog (vet issues) and my lovely MIL came to keep me company. I remember thinking to myself 'what have we done?'. What a terrible mistake we had made. If someone came over with adoption papers there and then I would have signed them. My DS had a few issues post birth and I left it to MIL to go with him as I just couldn't face it. Each time we got visitors round, I eagerly handed over the baby and just sat there feeling numb.
I couldn't bond with my son who I felt was a big mistake and ruined our lives.
Sleep was a big factor: I had 5 days of no sleep during my difficult labour and this continued with waking 3 hourly to feed my DS
I was pushed into a PND diagnosis and prescribed anti depressants but I didn't take them. I knew I wasn't depressed and I knew it was a specific feeling around my baby and losing a sense of myself.
Things changed slowly: I gave up BF after 4 months and felt FREE! I no longer felt like an object used solely for food. I started to feel a lot closer to my DS because of it.
At 6 months we sleep trained and this was a DRAMATIC change in how I felt - I hadn't realised how much 3-4 hours sleep a night was affecting me. It took 4 nights and we did the slow retreat method and my son went from waking every 1-2 hours to sleeping through with just one bottle. It was amazing. He also started napping for 2 hours at a time too.
Then he started crawling and really interacting with the world at 9 months and I suddenly couldn't remember the last 'bad' day we had. It had switched from only the occasional good day to rarely having a bad one.
Going back to work and getting him into a good nursery were the final things that slotted into place. I get a sense of myself back and I had space from him to ACTUALLY MISS HIM. I had felt so claustrophobic with him clutched to me all the time that the space gave me time to miss him so much I changed my hours so I could have some 121 time with him in the week.
Things have got so much better now that we're expecting number 2. The difference this time is that I KNOW I don't enjoy those early months. I KNOW I didn't enjoy BF but I also know things get better so I'm actually really looking forward to it.
Importantly I also had a debrief with the head midwife team on my traumatic labour and honestly wish I had done it sooner. It was extremely cathartic and I feel confident it won't happen again.
So please don't beat yourself up, perhaps try some sleep training, maybe seek a debrief with the hospital and KNOW it will get better! I have such a close bond with my DS now that you'd never know how much I struggled early on