FM, please dont take any more!
You may not be able to go to toilet because baby is in way.
or it may be that the baby has been to toilet in waters (it does happen even if not taking castor oil). If meconium is present when your waters break then baby will have to be under observation for 12 hours minimum to check for any sign of infection like pneumonia as it can get into their lungs. Baby CRX was under obs as she had pooed in waters and i had not touched anything like castor oil.
The fact that you havnt been to toilet will make no difference now, just dont take any more.