Did anyone take castor oil to induce labor and it made baby pass meconium?

I took abt a tsp of castor oil today because im so ready to b done with this pregnancy and then read abt some of the horrible side effects. It did nothing to me at all not even make me use the bathroom but now im scared I have done something to hurt my baby. Im really scared and wish I wouldn't have done it. Im only 38 weeks could someone tell me about their experience with castor oil?