Yup...it's a thing! Let me explain. As your period approaches, both your estrogen and progesterone levels start to drop. This drop signals the release of prostaglandins which help to contract the smooth muscles of the myometrium to shed the endometrium. Essentially, your uterus muscle is contracting to shed its lining and voilà. Your period! At the same time that the prostaglandins are having their effect on your uterine lining, some might also wander next door to your bowels
