First of all congratulations on your pregnancy! Secondly - calm down! Easy to say I know, but sometimes there is information overload when you are pregnant - you want to do your best for you, your DF and of course your bubby, but there is sooo much information out there, so many different stories and opinions that its easy to get anxious about it.
I would suggest you take a few days break of "baby/labour" research and relax! Read a book not related to pregnancy or babies, cruise the general chatter forums instead, get a pedicure or something else for yourself.

It sounds like you want to be informed as possible which is great but give yourself some time to process everything you are learning, and remember you are coming up to half way so you have plenty of time to think things over and even to change your mind a million times (pregnant womens perojitive SP?that looks weird!)

Your body is made to carry a baby and to birth a baby, you are doing all your research and you will make the right decisions for you when the time comes. I too was nervous and scared about actually having this baby, but when the time came I was so ready to meet this little person!
Good luck with it all and take a break!!