Labor fears!

I'm 8 weeks from my DD and really starting to freak out. I've gone through the classes, read the books, saw the documentaries, and I have a doula who has prepared me as best as she can...but I am SO paranoid! I think it's just the thought of the unknown since this is my first. Everyone's labor story is different so I just have no idea what it'll actually be like, and I hate not knowing! :(