Mittelschmerz (German: "middle pain")'s a medical term for "ovulation pain" or "midcycle pain". About 20% of women experience mittelschmerz, some every cycle, some intermittently. Symptoms and diagnosis Mittelschmerz's characterized by lower abdominal and pelvic pain that occurs roughly midway through a woman's menstrual cycle. The pain can appear suddenly and usually subsides within hours, although it may sometimes last two or three days. In some women, the mittelschmerz's localized enough so… (More on Mittelschmerz)