I had a similar but different birth, not as traumatic as yours. No NICU. Sounds like you have had it tough.
But I also got sold on a water birth with hypnobirthing and things were very different to what I wanted. I felt the same as you described. In fact I remember thinking at the time, this is like taking care of a pet!
I was obsessed with how wrong my birth went and I couldn't move past it for ages. Crying my eyes out to a health visitor and then my mum helped, I must admit.
then I felt angry and like I didn't want to do it anymore. I felt the same about my husband and resented that his life stayed the same but mine had changed so much. A shower became a luxury. Two minutes is all I'd get and then half the time he'd bring the baby up while I was getting dressed, I resented that. It caused friction.
Coupled with the sleep deprivation and the fact i seemed be breastfeeding constantly, it was rough.
It was at around 4-5 months that my baby started taking regular ish naps in her bed. 3 or 4 times a day if I remember correctly. I suddenly got a bit of my life back. I could sit with a cup of tea and watch daytime telly for half an hour. Or log on to my laptop and do an hour of work.
At this point, one day I just looked at my baby and it hit me, how much I loved her. Like it snuck up on me out of nowhere.
I promise things will get easier when you're out of the newborn stage.
Another thing that helped: baby wearing. I found putting my baby in a sling and getting on with some jobs or going for a walk/to the shops really helped. If this isn't something you've considered before, the baby wearing UK Facebook group is a good place to start. Lots of experts in there.
Just remember the baby is permanent of course. But the situation isn't. They change so quickly, routines change, they become more independent and things do get better. They're not newborns for long. And even if you got to the six month mark and hated your life still, it's ok to look for a job and put the baby in nursery! Lots of people say it's the only thing that saved their sanity.
Spend a few months on mumsnet and I promise you'll notice the way you feel is totally normal and loads of people will say things do get better x