By: Mara Sampson Premenstrual Syndrome, commonly referred to as PMS (and sometimes incorrectly as premenstrual symptoms), is something that almost every girl and woman experiences at some point. It usually starts a few days before your period begins and eases off two to three days after your period has begun. PMS is characterized by mood… Read More »PMS & Constipation: How They’re Connected and How to Relieve Them.