Newborns grunting and weird breathing can be scary but it's normal.
It's more than likely that you'll poop but that's to be expected when you could spend up to a few hours 'pushing into your bum like you need a big poo' as my midwives kept chanting.
The afterpains. I was under-prepared for those after my third baby, otherwise I'd have bought some decent painkillers.
I felt back to normal straightaway after the first two, but was in quite a lot of discomfort after the third, and shuffled for the first few days.
Baby bloggers are writing a story. They will exaggerate the gore factor, sometimes competitively so take what you read with a pinch of salt.
You might feel completely fine. My health visitor said in a knowing way, 'don't forget you'll get the baby blues, you'll be moody and bursting into tears every 2 minutes but don't worry it's normal'. I wasn't and I didn't.
(Whispering voice) I can't think of anything worse than baby groups. Only go if you want to go.