Dysmenorrhea

dysmenorrhea /dys·men·or·rhe·a or dys·men·or·rhoe·a/ (ds-mn-r) n. A condition marked by painful menstruation. Also called menorrhalgia. Dysmenorrhea is the occurrance of painful cramps during menstruation. (Medical Dictionary). Dysmenorrhea (or dysmenorrhoea) is a gynecological medical condition of pain during menstruation that interferes with daily activities, as defined by ACOG (American College of Obstetricians and Gynecologists) and others. Still, dysmenorrhea is often defined simply as menstrual pain, or at least menstrual pain that is excessive. (Wikipedia)

You guys had no idea how painful it is...