I have heard different things about castor oil. It has worked for some and not for others. Some say it causes the baby to have a bowel movement in the womb. I know it worked for my sil but it did not work for me, although my baby did not have a bowel movement until after birth. I know it did give me some great contractions for about a day and a half. I only had the s"""s twice and it wasnt that bad as some people say it is. the only thing it might've done was make me dialate a little more but hopefully it will work for you since you are overdue. I was 38 weeks when I tried it. Keep us posted and take care!!!! Good luck- maybe the next time we hear from you you will have had a beautiful baby!!!