i agree with everyone else, start with little bits and pieces here and there, you can't change what will happen because you've bought things, i started buying the bigger bits when i was about 28 weeks, and left it a little while before going back to buy some more things about 3 weeks ago i'm 36 weeks now and you never know, they say to have your hospital bag packed around 36 weeks in case baby decides to make an early appearance, so why not buy the essentials you need, you can't leave hospital unless you have a car seat!!don;t worry about superstitions i got upset when i was told at 21 weeks it was to soon to buy stuff and cried for about 3 hours and refused to go then calmed down and decided to go after my 24 week check. it's good to be well prepared!! good luck and don't listen to what anyone else says about things being bad luck, it's crap!! Em xx