I always see people telling other not to do caster oil because it will kill your baby. There's actually more success stories with caster oil than not. And also, some midwives recommend it. The chances of something going wrong are pretty slim. I took caster oil and my baby didn't poop or die. And I'm very much fine. I also personally know a lot of people that took caster oil and it worked and they had perfectly healthy babies.
if the baby is not ready nothing you do will work I try everything with my first 2 pregnancies and nothing worked I was passed due and had to be induce just be careful...ask your doctor for a membrane sweep that made my water broke with my first... Good luck