Pregnancy Question

[LiveLoveSims]

I need moajor help! please help me. It has nothing to do with this thread but please help me. My sim is expecting a baby very soon and I wanted to build a nursery. I went to the buy tab at the bottom of the screen (im playing on the wii) and i found what i wanted. When i found it, it had a little red symbol that looks like a house nxt to it but it had a X through it and it wont let me buy the item. I have enough money, and I made a room for all of it, but why wont it work??? please help!