I felt exactly the same way too..

You do know that you will do an amazing job birthing your little one don't you?! No matter what happens you will do so well because your body is designed just prefectly to give birth..
I felt just the same way too, but when it really happens, it's brilliant! Things just happen! We need to just go along for the ride! Don't get me wrong- I'm not playing down the discomfort and plain hard work that labour brings to us but we can do it. YOU can do it! I'm serious you know!

All the best