solow, I just stumbled upon your post......and I echo what lots of others have said.
When my dd1 was born 6 years ago this month, I could have written your post. It was a traumatic and fast birth, I had no useful support in hospital, came home with unrealistic expectations, had an extremely unsettled baby while all around me had calm/feed/sleep babies and I felt like a freak because I couldn't soothe my baby.
I would be in bits when my DP had to work away (frequently) and I remember some dark, cold evenings playing music loudly, singing, rocking her in my arms as she wailed and one night climbing up to our highest window to watch for my DP coming home. I remember us getting frustrated at each other because we were so tired from the constant demands and I too felt like we had made a HUGE mistake. I cried oceans.
I shut the doors, tried not to go out, tried not to meet anyone etc. Convinced myself I was a crap mother, convinced myself I didn't have PND and struggled through. I didn't realise it at the time but it took me 2.5 years to adjust to my new life.
She is now 6, still very, very attached to me but gorgeous, clever, has a wonderful nature, is cheery, daft, cheeky, rude and polite, kind and compassionate. What I'm trying to say is that these days are sometimes so tough. It will not effect your future relationship with her. She will not remember these days. You do need time to adjust but you also need heaps of support to adjust. ADs could assist you in that so keep an open mind.
I found a great book called At Home No One Hears You Scream, Cara Aitken. It was great. I didn't know about MN then and to read stories of people who felt like me was a weight lifted.
BTW, I went on to have twins after my DD and one of them was very unsettled, finally showing me that IT WAS NOT ME as the other one was fine!! I took him for cranio sacral therapy (also called cranial opsteopathy) and it made a huge difference overnight. He had 2 sessions. I found mine through a herbalist clinic that had an osteopath who ran a baby clinic.
Good luck sweetheart xxx.