Christ on a
love - survive is about all you have to do at this stage. What an enormous shock!!
I love kids, have looked after kids since I was a kid, changed more dirty nappies by the time I was 15 than most adults do in their entire lives and would love a baby right now - but if I suddenly found myself in labour I'd be as shocked as fuck too and probably not function properly for quite some time!
Has your Mum always been so monumentally unhelpful and does she have a degree in Pointing Out The Fucking Obvious?
Honestly, the people around you are letting YOU down, you are not letting anyone down.
How old are you? Are you living with your Mum?
You have nothing to feel guilty about, nothing. As for bonding, people aren't just 'saying it' on here, loads of Mums don't bond for months and months and that's with a baby they know is on its way. Basically having one handed to you and being told you are now a Mum - head fuck on a major scale!!
You will come to terms with it, you will bond with her and in time you wont be able to imagine life without her, but don't worry about all that right now - just keep her fed (nothing wrong with formula), clean & loved... the rest will come.
PS: If it's one time you are allowed to be rude, it's now... if they are really doing your head in, tell them to STFU :)