I wouldn't be thinking good idea or bad luck but more in the terms of what season bubby gets born in will affect what you need and in what size.

Plus the excitment of buying everything for your baby when you are pregnant is fabulous. Kinda adds to the excitment.

We also toyed with the idea as well and these were the big points that changed our minds and we waited.

(Hope you don't mind me adding my two cents even though I'm not a Long Term TTC).