Is diarrhea a sign of labour?

Yes, it is one of the signs of labour. During the early part of labor, your body begins to release prostaglandins, a group of hormonelike substances that cause the uterus to contract and help soften and dilate the cervix. But prostaglandins can also hyperstimulate the bowels, causing frequent stools or even diarrhea, Dr. Grabowski says. http://www.parents.com/pregnancy/giving-birth/signs-of-labor/labor-signs/