Part of being a woman is experiencing the physical and emotional craziness that happens 1 to 2 weeks before your period. Also known as premenstrual syndrome or PMS, symptoms start 1 to 2 weeks before your period. The cause of these physical, emotional and psychological symptoms is thought to be caused by the hormonal changes and fluctuations during the menstrual cycle.

Most PMS symptoms caused by normal cyclic hormonal changes include bloating, weight gain, menstrual cramps, headaches, crying spells and irritability, quickly go away once Aunt Flo comes into town.
If these symptoms don’t go away when your period arrives you need to think about other potential medical conditions and not blame it all on PMS.