Hi Lela
It is really hard with a newborn but it does honestly get so much better. I was in your shoes and in the course of a few weeks I felt as if things - everything couldn't get any better ever - but they have of course.
A baby puts a strain on even the best relationships. My husband said and did some very hurtful stuff in those weeks - he was sleep deprived, and although he knew I was depressed he didn't (and probably still doesn't) know what severe pnd / depression feels like as it's not something he could ever imagine or experience.
He didn't feel that he shouldn't have had this baby, nor did he feel that he didn't want our son or would be an inadequate parent -I did. He couldn't understand why I was finding this so hard.
What helped for me was getting some space in a MABU as you know. My depression (and meds) made me almost catatonic so that I had delegated almost every aspect of babycare (apart from bf) to my husband - which in turn made my self confidence in looking after my son even worse.
The MABU also gave me a break as for a couple of weeks they took over night feeds (using either expressed milk or formula) until I felt well enough to take them on; and although I hated the idea of mixed feeding it honestly did save my sanity, and my ds did decide to go back to wholly bf by rejecting the bottle at 8 weeks old.
The break helped my relationship with my husband - he saw me most days, but he was able to see me more as the person he knew and fell in love with, than as the person my illness had made me become.
Our relationship post child is not perfect - and to some extent I do feel some anger that he wasn't able to support me in the way I needed at that time - but tbh if the tables were turned I may have reacted in a similar way if it wasn't something I understood.
I'm not trying to sway you to a MABU, but if you are offered a place and you feel it is the right option for you, it can be a refuge and help you get stronger and back to yourself again.
Re the routines; for me I bf on demand - wherever, whenever. For me, any baby routine book really just didn't work. Some babies (and especially newborn babies) just don't work to a routine about spacing feedings, and when I let go of any preconcieved notions of routining my son I actually felt a little better - it removed some of the uncertainty and self doubt that I was doing things 'wrong' as my son wasn't following the book.
And every health visitor and mw I spoke to did tell me that the advice to space feedings for a bf newborn is outdated as the rate of digestion is different than a ff baby.
In the early days it does feel as if you have a baby permanently attatched to you. You may have a particularly hungry baby (mine was and has turned into a ravenous toddler), or you may feel as though as soon as you put him down he is instantly crying out to be held again. That's perfectly normal behaviour too - it must be really unsettling for a baby to spend nine months cocooned in bliss, its every need being met, then to suddenly emerge into a cold, hungry world, separate from you where he has to learn independance.
It does get better though. You will come to know your son and his personality, and you will come to love and adore him - especially when you are more rested and feeling better about yourself.
Things will improve. The first 8 weeks are definately the hardest, and the sleeping and feeding settle into more of a predictable routine.
I would def second the advice about swaddling as it did settle my son more for around six weeks.
Re your worries about damaging your son by him crying - there are lots of different parenting styles so you will get loads of different advice about this. I could never stand the sound of my son crying (still can't) as they are designed to get your attention.
I am a bit of a fluffy attachment style parent (sooo different to what I swore I would be) but the general scientific stuff I have read (sciencedaily.com my source) is that excessive crying in newborns raises cortisol levels (stress hormones) and this does have an effect on brain chemistry. It is very unlikely that your son will be damaged in any way from some crying (and all babies do this whichever parenting style is followed) only excessive crying is not recommended.
Things do get better, please hang on in there and be totally honest to your hcp's how you feel - they have seen it all before and it doesn't make you a bad mum.
hth x