Rhythm Method
Updated:The rhythm method, also known as the calendar method, is a natural family planning technique used to prevent pregnancy or increase the chances of conception. It involves tracking a woman's menstrual cycle to predict fertile days and either avoid or engage in sexual intercourse accordingly. This method is based on the assumption that ovulation occurs at a consistent time in each menstrual cycle.
Additional Information
The rhythm method requires careful tracking of menstrual cycles over several months to identify patterns. It's considered less reliable than many other forms of contraception, with a typical-use failure rate of about 24%. Factors such as stress, illness, or changes in routine can affect cycle regularity, potentially reducing effectiveness.
For pregnancy prevention, couples avoid intercourse during the predicted fertile window. For conception, they aim to have intercourse during this time. It's important to note that sperm can survive in the female reproductive tract for up to 5 days, which is factored into calculations.
Examples
A couple avoiding pregnancy might abstain from intercourse or use barrier methods from days 8-19 of a 28-day cycle.
A couple trying to conceive might focus on having intercourse every other day during the predicted fertile window.