Calendar Rhythm Method

The calendar rhythm method makes use of our knowledge of when a woman is likely to ovulate or by calculating a woman’s fertile period on the calendar. This method enables many women to calculate their fertile and infertile period based on her previous menstrual cycles. In using the calendar rhythm method, you must take into consideration that ovulation starts about 14 days before the next menstrual period plus or minus two days. That sperm can remain alive inside the woman’s uterus within 3 days and that the ovum or egg survives for 24 hours after ovulation. A woman with very regular cycles simply needs to count backwards from the first day of her menstruation period to know the day of ovulation, which is usually the 14th day after the first day of her period.

Calendar method birth control

With this knowledge, she can predict when ovulation will occur the following month and avoid having sexual intercourse on those days. The calendar method is not so effective in preventing pregnancy as sometimes a woman’s periods are irregular. There are times that they might think they are not fertile but it is to the contrary thus they get pregnant. This method also does not provides any protection against sexually transmitted diseases.