helloooooo!!!
oxytocin, as blueberrypancake says stimulates contractions, and as it is administred by drip, can be turned up and down, to 'control' labour
the contractions tend to come harder and faster and with more intensity
the good thing is that if worked for you in getting you fully dilated ..
re would it have happened anyway?
well, i reckon so..might have been that your baby's head had not come down much for the first part of labour and was not exerting pressure on the cervix which helps dilation
also, first labours can be long, and slow. the vast majority of women will dilate without medical intervention
were you monitored constantly and confined to a bed for those 20 hours? that can slow things...
oxytocin can overstimulate the uterus which can distress the baby, which would affect heartrate and might lead to the baby passing meconium..but it sounds like your baby was just fine and there was no overstimulation, don;t know re side effects
oxytocin is producing naturally in the body, and can be produced by nipple stimulation and sex / orgasm..which some women use as a way to help bring labour on in the first place! you would have received a synthetic version in hospital
i imagine that second time around, that things might well go quicker, and if they don;t then you know that it is ok , because that is the way you labour
staying upright , active, and being able to listen to and follow your body's lead in labour can really really help