Premenstrual Syndrome (PMS) refers to the symptoms that typically occur in a menstruator between ovulation and a period. It is estimated that 3 of every 4 menstruators have some form of PMS. These symptoms can be both, emotional as well as physical. Although it is perfectly normal to have these symptoms, it can often affect the mental health of the menstruator if they are not fully aware of why they are feeling the way that they are.