Ok, pep talk from someone who was told her baby wouldn't live past 15 weeks...
I spent so much time trying to disconnect from the pregnancy so as to not get as upset when it ended. I tried to think positively about getting pregnant again. I avoiding acknowledging it. I waited to find out the gender...but the thing is, you ARE going to be sad if you lose it, trying not to get excited will not ease your pain, and it will not make the pregnancy any more or less likely to succeed. The best thing you can do is be happy about it and embrace it while you can. Better to be happy for this time, if you're fated to miscarry, than be sad and disconnected. But please realize a miscarriage is the unlikely scenario.
As for me, my baby with the 15% chance of survival is now 3years 8 months old and sleeping in the other room. Don't let stats scare you. Let yourself be happy!