Tracking your menstrual cycles can help you understand what's normal for you,time ovulation and identify important changes -such as a missed period or unpredictable menstrual bleeding.While menstrual cycle irregularities usually aren't serious ,sometimes they can signal health problems.


Each month,one of the ovaries releases and egg -a process called ovulation .At the same time ,hormonal changes prepare uterus for pregnancy .If ovulation takes place and the egg isn't fertilised   ,the lining of the uterus sheds through the vagina. This is a menstrual period.