We are starting TTC in January and already have absolutely loads
-Lots and lots of clothes that were either free or from charity shop for a song (most unisex but some girly/boy stuff - will Freecycle whatever isn't needed)
-Bottle steriliser (was in a fantastic sale and we had the cash)
-Bottles and dummies (I'm very very fussy and had already picked out the brands I wanted to use and they're only available in the US, so we got them there last holiday)
-A few reusable nappies that were quite cheap as we want to give them a try
-Pack of newborn nappies so we don't forget to buy some before coming home
I'm sure we'll buy the pushchair as soon as we find out we're pg, we don't have a car so no use for a carseat, and intend to use a travel cot at the foot of our bed for 6 months so no need for a cot either. So most of our purchases are already made!
I don't get the tempting fate thing unless you've already had a miscarriage or have great reason to think you may have. Fate is fate - things happen regardless of whether or not you buy stuff, I'd much rather be prepared. Also partner really wanted to start as and when we had the spare bits of cash if you see what I mean, much less expense over time than buying it all at once.