The calendar method involves figuring out how long the time is between your periods so you can predict when next period will start. 2 weeks before the day your period should begin is the time that ovulation occurs. Intercourse should be avoided 5 days before and 3 days after the estimated day of ovulation which, to repeat, is 2 weeks before period is due. This method is effective only in women who have periods that are always on time.
The basal body temperature method is usually done along with the calendar method. Your temperature is taken the same time each morning before you get out of bed. If the temperature goes up by 1⁄2 to 1 degree you may be ovulating. You will need a special basal thermometer to take your temperature. You cannot have sex during the 3 days your temperature is up.
The ovulation method, often called the vaginal mucus method, relies on detecting changes in the vaginal mucus. When the vaginal mucus becomes thin and clear, ovulation is occurring and intercourse should be avoided for 3 days.
Experience has shown that of these 3 methods, the ovulation method is the easiest and most reliable. However, its effective use depends upon a couple having read in detail one of the standard references describing this method and, whenever possible, receiving instruction from a person experienced in the use of the method.
Women should consider these methods if they can’t use any other form of birth control.
Advanced Medical Systems Inc.