As for what you will do all day.... you will be able to spend hours just staring at this human YOU MADE!!!! In awe of yourself, your OH and Mother Nature.....
Of course remember getting out the house to seeother humans (incl the MW / HV who want to see you) will take 5 times as long as it used to. (Have you seen the Michael macintye sketch on this? It was about older kids but he should do one about NBs too!!). Inevitably baby needs to feed, or does a massive poo or vomits everywhere when you try to leave or you do...... Then you discover getting the buggy or babyseat in and out is harder than you imagined and for the first 6 weeks you can barely walk due to the damage sustained during the pregnancy or Labour...... or you could be super lucky and it allgo like a dream!!! You won't know until you are "in it".....
Month 1 - lay in until 10 or even all day, napping and breastfeeding (hopefully lying down - ask someone to snow you or look up on you tube - or try "laid back bf" sometimes called "nurturing bf").
Your beloved will not want to be far from you and will bring breakfast / tea / coffee etc to you and will change all the nappies and baby's clothes.
Sometime later - have lunch and get dressed, unless you are expecting visitors in which case stay in PJs until they leave. Afternoon - entertain guests and shop on amazon / John Lewis for all the stuff you think you still need.....
Then back to bed.....!
UNLESS you have a problem in which case you will spend most of your time trying to feed the baby, change nappies, change their clothes, feed yourselves, change your clothes, see MWs and HVs at annoying hours and generally run ragged.
You might spend a lot of time crying. You may need to speak to your mum or best mate all the time for reassurance. You may doubt yourself at every turn. You may resent all sorts of things that other people are doing. Or you might be in your element going with the flow and chilling out.
I had a postnatal doula with #1 for weeks 3-8. And an IBCLC on speed dial (DH was working overseas so Away Sun pm until Fri am). Money well spent. They helped me get over my horrific perineum tear, sort out a tongue tied baby who wasn't gaining weight and then helped me visit a paediatrician and find someone to snip the tongue tie. Then they helped me gain confidence to get out the house and tobreastfeed in public.
2nd time round DH was home and we didn't invite any visitors...... great trick as meant we had lots of time together to chill and to get to know each other.
Month 2 & 3 - baby will only want to sleep wherever you are - or no where near you depending on the baby. This is the Time when you see dad walking small babies at odd times of Day trying to get them to sleep!! This is the time you love n hate the baby snuggles. When you are pinned to the sofa breastfeeding / napping whilst surfing MN & FB, shopping online and catching up on boxsets. !
Month 4/5 - you will think "hurrah I'm awesome at this" and start to hang out with other adults and small babies in coffee shops and all bar one etc. Time spent pinned to the sofa or bed will reduce drastically.
Month 6-8 it gets harder and harder as they start solids and start moving. You suddenly realise your life is not your own and you are dancing to the sound of someone else's drum!
Month 10 you may start thinking a return to work & outsourcing 70% would be preferable to this drudgery, albeit interspersed with sunny moments. You will no longer be able to frequent coffee shops and all bar one as baby is on the move and doesn't like being restrained.
At home you discover this solids malarkey is not all it is made out to be (hence why so many 2nd and 3rd kids discover solids later than PFB)...... Make food. Breastfeed. Baby eats food. Breastfeed. Clear up kitchen, dining area, walls, chairs etc. Clean baby bum. Take a break. Repeat...... plus shopping, playgroups, monkey music and tumble tots etc....
Best of luck. And enjoy it!!