You might consider trying it without castor oil this time to see if that makes a difference too. It wouldn't necessarily *prove* whether the castor oil caused it last time, but I'd be curious about it.
I'm on the fence about whether I'll do the magnesium for uterine toning again. On one hand I know it's not a scientifically validated thing so I don't *know* that it made a difference in helping me have such a quick birth. But there is part of me I think that doubts whether my body would perform that way without help. Sort of a self-doubt sort of hangup if that makes sense.