I found pregnancy difficult, I was very sick. So when they were born, the best thing was not being pregnant any more! I was so happy to have my body back, I remember the newborn phase as very happy (if tiring of course). Whatever the challenges it was an awful lot better than the first 20 weeks of pregnancy when I had HG and probably ante natal depression too.
My DH was very relaxed, and so was I, feeding got set up easily each time, we just chilled, held the baby and fed her/him all the time, watched TV and went out for walks with baby in the sling.
The bad things - TMI, but the first post partum poo with a third degree tear - not fun. Not that it was painful but that there was just no way to make it er .... happen! No muscles at all, everything floppy and weak. I got very anxious thinking I would be stuck on the loo for days. But I had lots of fybogel, hot drinks, and squatted, and eventually, it happened. Thank god.
When I had DD (2) and newborn DS - there were some hairy moments when both were screaming and I was standing not knowing how on earth to help them both simultaneously. There were quite a few moments of overwhelm like that!
TBH the worst moments were later on - eg at 14 months, teething molars and about to start walking, so very very frustrated and grumpy. Sleep totally up the spout, waking every hour, and I was back at work then so I had to get up at 5 and go to work meeting two hours away. I sometimes cried with the tiredness. I remember, with DD next to me not sleeping at 3am, well I am not asleep but I AM lying flat, that must count for something, Not fun days! at least on mat leave, you are really tired and sleep is dreadful, but you only have to muddle through.
I think the absolutely lowest point was when DH went away for a week's training course three hours away. Meanwhile baby DS, toddler DD and I had norovirus and my parents were away on hols. There were poonamis everywhere, including one that seeped right through baby DS' gro bag, sheets and right into the mattress, that I had to sort in the middle of the night, once I had sorted that, and finally got him back to sleep, I threw up myself. Finally sorted myself out, at which point DD started howling and had done a poonami of her own all through her toddler bed. I sobbed down the phone to DH and he was all for giving up his course and coming home but I gathered myself in the morning and things looked up.
But having said all that we have thankfully so far been spared any real terrors about our DCs heath or happiness.
Your body will eventually go back to normal, no matter how weak and broken you feel in the early days, just take it easy, and expect it to take time.
The whole thing is an absolute blessing, they are the light of our lives and the apples of our eyes. Enjoy the ride :-)