we first went out week three! for the first week, my DH really did a lot of looking after us, second week, he backed off a bit, third week, he was outside doing jobs and things while i looked after LO most of the time but i did ask for help with some stuff. I was a bit panicked that i would never be able to get thru a day without him and certainly not be dressed and ready to go out before lunch time, so we had a day in week three where i had to pretend like DH wasn't there at all, and i wasn't allowed to ask for any help (but of course if i had a major melt down he would be there!) and we coped just fine
it was also week three were i decided to commit myself to always getting up on LO's second cry in the night - which usually around 5am. Then when he went back to sleep i would get on with getting myself ready, cleaning, washing, getting bag ready etc etc and eventually we were up and ready to go out at about 8am!!
our first outing along was only a short walk to the shops though - but once you have done it once, the confidence it gives you is a real boost, and then u want to do it again, and push your self a bit more. I even panicked about how i would get through a shop door with the pram without looking like a total idiot, but again, once you manage it, it just gives you a massive boost!