However you give birth and however you feed, your body has done something truly amazing. Give yourself time to recover, avoid the scales and allow yourself to burst with pride when you stare at the tiny little being you created.
Newborns can eat a lot. Just because you fed them recently does not mean that their angry cries can't possibly be hunger. Always offer some milk! We spent a few early evenings thinking our little one had terrible colic and going through all sorts of shushing and swaying routines when really they were just a hungry baby and instantly settled after some more milk.
Invest in a carrier / sling. It seems to be an off switch for lots of babies. You won't be able to do everything whilst wearing the baby but being able to muddle through some household tasks or drink a cold drink over the baby's head is certainly better than being nap trapped all day or listening to them screaming.
Don't ever feel guilty about accepting help or letting someone else hold the baby for a bit. There is no reward for doing it all on your own and passing the sleeping baby to someone else whilst you have a long, hot shower will definitely not ruin your bond (as I thought in the early days ...)
Try and get out and about early, even if just for a short walk. It's good to help your little one set their body clock and also good for you to get some fresh air and reassurance that, even when you're trapped inside in the middle of the night wondering what on earth you've done to your life, the world really does keep turning and things will get better.
Newborns are portable so make the most of coffees, shopping etc. Having said that, always bring more nappies and outfit changes (and bottles etc if formula feeding) than you think you'll need. Some days you will end up needing an outfit change for yourself as well ...
Reach out to other mums from parenting groups, antenatal class etc. You will never be the only one feeling like you do. Share the good bits but share the bad bits too.
If the baby has two parents, use them both. You shouldn't be the default parent. Make sure your partner is doing at least 50% (preferably more when you're recovering). It can be hard if breast feeding but there's plenty else to be done. This includes the mental load - remembering appointments, remembering to check if the baby is warm or cold enough, remembering to make sure there are enough clean outfits and nappies etc. Keep in touch regularly about how you are feeling, what you are finding easy and what you are finding hard.