You'll need: vests, blankets (I absolutely love the Gingerbread one from Mamas and Papas), sleepsuits (the ones which have poppers straight down the middle are easiest), moses basket/cot, sheets for the moses basket/cot, sleeping bag, dummies (just incase), baby bath (I prefer the seat things you can put inside a bath), plenty of muslims, bibs, nappies (I don't see the harm in buying these now, you'll need loads of these), bottles?, changing mat, baby monitors, baby bouncer, baby swing (I would buy one of these if I had a baby again), thermometer (spend a bit more and get a decent one).
All I can think of for now lol. I bought a few cream babygros after my 12 week scan then after I found out I was having a girl, I did buy things then. It's up to you how much you feel comfortable buying now. All the best for the rest of your pregnancy.