I did castor oil twice, one week apart. Dd was born with severe meconium aspiration, had been in it for about a week... which was how long it had been since the second time I took the castor oil. She almost died, and had to be transfered to the children's hospital because the NICU ran out of interventions. I didn't get to hold her until she was two days old, and she was hooked to a bunch of wires and tubes. I don't say anything because I hope it wasn't really my fault... but yeah, won't be doing that again. :(
OP, it could be up to four more weeks. I'd try to stay distracted and let it go, sorry!