I need your Advice momies

My midwife told me to drink Castor oil to give birth because baby is already 3kls and i'm on my 37 weeks 6days , she's worrying that baby might get bigger and the age gap from her older brother is 12yrs. She doesn't want me to suffer during giving birth if ever baby got even more bigger .. So she advised me to drink Castor Oil .. Plss is it safe??is it ok to drink it?? I am scheduled to drink it today .. HELP ME PLSSS Pwede po tagalog nagrereklamo lang po kasi ibang lahi na dpat daw English .. Hahaha Hirap si ateng. #pregnancy #advicepls #pleasehelp