MayoClinic.com - Menstrual Pain
http://www.painsweb.com/articles/220/1/MayoCliniccom---Menstrual-Pain/Page1.html
By PainsWeb Admin
Published on 12/20/2006
Most women experience menstrual cramps (dysmenorrhea) at some time. The discomfort ranges from merely annoying to severe enough to disrupt everyday ...