I take a laxette (senna) tablet everynight before bed. It works and helps out heaps. I find that if I take 2 though, i get cramps and diarrhea, so its all about finding the balance. I am pretty sure that it is the bowel motions/contracting your bowels etc to go to the toilet are the cause of the early labour contractions if it did happen just like it would happen if you took castor oil (which does the same thing except more severely)....as long as you don't have diarreah I think you are fine I am!