I wouldn't use castor oil. A family friend had to have a histerectomy because her uterus partially came out while in labor due to using castor oil. Also you risk your baby pooping in the womb and eating it which can be fatal. I was induced with pitocin and it only took about 10 hours before I was dilated to 10cm, it isn't so bad. Try walking a lot and eating pineapples. Nipple stimulation can make contractions get stronger too, it helped with mine.
Do some dsncing or excercising ! get on a yoga ball ! warm baths also help! hope it helps
Don't use castor oil!!!!! You can risk your babies life if you use it.
I was induced with pitocin, it was no big deal everything was fine.