I'm reading 'Childbirth Without Fear' which discusses the fear / tension / pain issue and the theory that the reason childbirth hurts so much is because if we're fearful or apprehensive the muscles that work in labour are not able to work together properly so that painful spasms result.
I am wondering what your experiences are? Is it all to do with the situation you are in and how you feel about it mentally? Could we make it less painful by relaxing and not being fearful of what our bodies are doing?
I know that of my two labours the second was very bearable until I went into transition and panicked. The first time, I could not believe that my body could actually do it!