I think that third trimester is all about birth in many ways, so I don't essentially think there is anything wrong with thinking about birth...afterall it is a life changing event. BUT I can totally see where you're coming from, and perfectionism is part of my personality too, so I know what you're dealing with.

Maybe you could change your attitude to birth to being one about letting go, of everything, including your expectations. It sounds like you have done all the reading and research and have prepped your DH as to your expectations about the kind of birth you want. now is the time to stop reading and go inwards and really talk to your baby. Listen to they're little voice and enjoy these last weeks of pregnancy.

i found having a birth/baby alter really helpful. I lit a candle each night before bed and read over my birth affirmations. I used that time to quietly talk to my baby and tell them I trust them and my body and together they know what to do. I also found this alter helpful in those crazy post-natal days...as a way of reconnecting to my own intuition and abilities and trusting that I was doing a good job.

The joy of bringing a baby home, is exactly that! It is an indescribable joy, and is so unexpected and overwhelming...you won't miss out I promise.

Being prepared for birth is vital. So now relax and enjoy these last few weeks of pregnancy.