How It Is Done continued...
temperature every morning for several months just after you wake up. Do it
before eating, drinking, or doing any other activity. Use a special ovulation
thermometer or digital thermometer that shows tenths (0.1) of a degree. Your
temperature may be taken orally or rectally, but be sure to use the same
location and the same thermometer each time. Leave the thermometer in place for
a full 5 minutes. Record your temperature, then clean the thermometer and
put it away. Any activity can change your basal temperature. Record your
temperature on a chart or graph. Use a tracking chart with either
Fahrenheit temperatures(What is a PDF document?) or Celsius temperatures(What is a PDF document?) to keep track of your temperature. Ovulation usually causes your BBT to rise by
0.4°F (0.2°C) and to stay high for over a week.
want to become pregnant, have sex every day or every
other day from your first fertile day until 3 days after your BBT rises.
If you do not want to become pregnant, do not have
sex or be sure to use another method of birth control from the end of your
menstrual period until 3 days after ovulation. After your temperature rises and
stays high for 3 full days, your fertile days will be over. Your temperature on
these 3 days should stay higher than on any of the other days in that
Cervical mucus method (Billings method)
put one finger into your
vagina and record the amount, color, and thickness (or
thinness) of the mucus. Test the "stretchiness" of the mucus by putting a drop
of it between your finger and thumb. Spread your finger and thumb apart and see
if the mucus stretches.
After your period, you will not have much
cervical mucus, and it is thick, cloudy, and sticky. Just before and during
ovulation, you will have more cervical mucus and it is thin, clear, and
stringy. It may stretch about
1 in. (2.5 cm) before it