Sorry to hear you are feeling this way.
Those early days are bloody hard work, throw into that sleep deprivation and for many people it's a killer.
Your story is pretty much how my birth and early days were.
My dd was born via ELCS, however shortly after birth was taken to scbu as the medics believed she had meningitis, she was there for 8 days and pumped with anti b's and anti virals every 4 hours, she had to undergo a lumbar puncture at 4 hours old. It's horrific seeing your new baby in an incubator with tubes everywhere.
Upon returning home I was so so anxious and also like you I didn't want to be left alone with her. My dp took 6 weeks off work as I was a mess.
I too felt no bond whatsoever, absolutely none and I hated being a mum, I found it suffocating, draining and missed my easy pre baby life so so much. Those early days when they give so little back are pretty boring and the days and nights seem so long.
At 6 months I knew I wasn't feeling as I should and went to the doctors where I was given anti D's. For me I found they didn't work. The only thing that helped was time! Time to get my head around the fact my old life had gone and I had new responsibilities. Time was as they say a great healer.
At 9 months old something changed and I started enjoying motherhood a little more and dd got a bit easier. Fast forward and she's now 22 months and she's bloody adorable and I love being her mum. Saying that I don't want anymore children as I couldn't put myself through those first 6-9 months again. It's still hardworking being a parent, but not anywhere near as hard as those early days.
I promise you it does get easier and much more enjoyable as they get bigger and start sleeping through, crawling then walking and talking.
Many of my friends have felt this way too, but pnd is still a bit of a taboo subject and when I said to certain people I felt no bond they looked at me like I had 2 heads!
Keep talking, surround yourself with as much support as possible. I wouldn't have got through it without my dear mum and ex dp (yes sadly we broke up, but are still very good friends and he's a fantastic dad) get out even though you don't feel like it, so many days I just wanted to stay in the house but my mum forced me out of the door and it does help.
Good Luck and I hope things improve for you very soon. It's a tough thing you're going through now but it will get better I promise. 
