lol... as I read that I thought, oh good, she's only having those thoughts when it comes to clothes... maybe.
Anyways, OH YEAH... when you've been through it, it's a daily challenge to keep your head. I've had those thoughts with clothes, my job (preparing everyone for a preterm birth once we finally told them at 16 weeks), the nursery, and now with bigger car shopping. I'm not doom and gloom, but I know that every day is a blessing and we're not guaranteed anything.
I did kind of jump ahead with one thing. I just finished a 9 peice nursery set, and really enjoyed doing that. In the back of my mind, I'll admit, there were/are those thoughts that something could go wrong and it could end up on craigslist. But... no regrets. I'd rather put my heart into this and be ready for that precious little girl - no matter the outcome - than regret not trying for another child out of (justified) fear and analysis paralysis. It does get easier as you pass those milestones.