Shut me up if I sound too much like a lecturer but in labour, your bodies triggers the most amazingly coordinated hormonal response. Oxytocin is the labour hormone and it's also the love/relaxation/safety/comfort hormone. The more relaxed, safe, comfortable you feel with your loved ones around the more optimal the production of oxytocin is. Its biggest enemy is adrenaline - the stress hormone which also obstructs the release of endorphins, your body's natural painkillers... You can guess where I'm going. Apparently, each women's body is set up to create a labour experience that that individual woman can handle - so it'll be painful but if you let your body do it's thing, YOU CAN DO IT!!!