otterliegorgeous, given you seem really anxious about your impending motherhood, let me tell you how it doesn't need to be like the horror stories you hear. Obviously for some people it is really tricky, but it isn't inevitable.
My pregnancy was awful, but birth was fine
We were out and about within a few days, and I even went to a party with friends at 2 weeks (baby stayed in with my husband). Sleep was perfectly manageable, because we shared it (even in the early days I was getting at least 6-7 hours a night), and although she was sometimes clingy, we used a sling. I was doing baking, just because I fancied it, going for day trips, and just having a good time with my baby, within a very short time.
I had a lot of clothes (we do have space), but actually it was generally a day outfit and a night outfit. We always kept/keep a spare in our bag, and maybe once a week or so we'd use that. She wasn't a sicky baby, so she'd get changed for freshness rather than being dirty as such.
I had prenatal depression, I required counselling pregnancy to get me through, but it's been a million times easier and more fun than I could ever have imagined.
You may have a sicky colicky baby. You may not.
You may have a baby that wakes every hour, you may not.
You may struggle to go out, you may not.
Until the baby is here, you simply won't know, and even then, the whole experience changes very rapidly as your baby develops.
Remember that the people who struggle (which admittedly some do), will probably be more vocal about it than those that find it a breeze, because no one wants to be smug...