With my first i screamed like hell. It was the most intense pain ive ever felt. But as soon as the midwife said 'it will be over soon'. I was ok. It was terrible pain but over quickly. The worst thing was the pressure (bearing down) i remember thinking 'oh my god i need to poo'. Thats how i kind of describe it. Its like the biggest poo youve ever done . With my second it wasnt so bad cos i knew what to expect.
Just let your body do it. You really dont need to push, just relax and go with it. Ps Morphine helps to relax.