Payment Management System (PMS) Access The system is available Monday through Friday: 5 a.m. until 4 p.m. Eastern Time Saturday, Sunday, and Holidays: 9 a.m. until 9 p.m. Eastern Time Find in-depth information on premenstrual syndrome (PMS), including symptoms ranging from bloating and weight gain to mood swings and depression. Find out more about PMS (premenstrual syndrome), the symptoms women can experience before their period, and premenstrual dysphoric disorder (PMDD). Mood swings, cramps and irritability are just a few telltale clues that you're getting your period. Learn what you can do for PMS symptom relief. Premenstrual syndrome, or PMS, is a cluster of symptoms that usually show up each menstrual cycle a week or two before your period. About 80% of women report having at least one PMS symptom each. Premenstrual syndrome, or PMS, describes physical and emotional symptoms that begin a week or two before your period. Most people who menstruate have at least one or more symptoms of PMS. PMS occurs more often in those who are in their late 20s and early 40s, have at least one child, have a family history of depression, and have a past medical history of either postpartum depression or a mood disorder. PMS is a combination of physical and emotional symptoms that many women get after ovulation and before the start of their menstrual period. Researchers think that PMS happens in the days after ovulation because estrogen and progesterone levels begin falling dramatically if you are not pregnant. PMS is the changes in mood, emotions, physical health, and behavior that can occur between ovulation and the start of your period. It typically lasts until a few days after your period begins and. Premenstrual syndrome (PMS) has a wide variety of signs and symptoms, including mood swings, tender breasts, food cravings, fatigue, irritability and depression.