You will want baby in with you anyway babe.. and it varies how long with each family. My friend still has her 2 year old in with her - in his cot. It's not for everyone, but it's their choice and it's right for them.
Babies barely need anything!
A Moses basket is all they really need..
You can change baby on your bed (which we have always done, despite them having a changing table)
You don't need a special baby bath.. just bath them in the main bath. You can buy special sponges for them to lie on.
They don't need to hang up their clothes in their own wardrobe.. just dedicate a draw for baby's clothes (that's what we did)
Get a nice rattan basket for nappies/wipes/nappy bags/bottom cream etc - and put it on your dressingtable or chest of drawers.
Bish bosh, that's bedroom sorted.
I have friends who sleep downstairs on the sofa bed, so their two girls (8 yrs and 3 yrs) can have separate bedrooms. It works for them.
You will be absolutely fine! I was lucky and didn't have a sicky baby (some babies throw their milk up, alot - hence the washing!) - so I didn't do masses more washing.
You will manage. It might get more challenging as your baby starts to crawl (around 9 months) and walk (9-16 months). But, don't worry about then.. just deal with the today. Most babies sleep in their parent's room for the first 6 months of their lives, if not longer. If your partner is working, and having to wake early for work.. then, maybe get a sofa bed downstairs, or blow up bed, so he can sleep downstairs for those first few weeks after baby is born. As it's pointless you both being tired. We did for the first 4 weeks.. just until we got into a better night-time routine.
Please enjoy being pregnant, and don't let this issue take over. It really isn't worth letting it overshadow this happy time. Yes, you will move one day, and have a plan with your partner to move ... but, until then, you will be absolutely fine. Ikea have the most amazing space saving ideas for all over the house, including for babies room.. and alot of their bedroom 'scenes' have a cot next to the double bed. It is normal for babies to sleep in their parent's room.
xxxxx