HJ ,you can get it from the chemist but its pricey. If your having bubs in a public hospital they will give it to you free.
I stood up for as long as I could to let gravity do most of the work and only laid down to push.
This may sound weird but after their heads were out it felt good.Again the pressure released. then with another push they were born.
I really think that a labour plan is the way to go.When your in the throws of labour all rational thought goes out the window.If you write a plan now while your "sane" it will remind you when you need a boost of whats best for you and what you wanted for the birth of your child.