Basal Body Temperature (BBT) Method
WHAT IS THE BASAL BODY TEMPERATURE METHOD?
At different times in a lady’s cycle, there is typically a rise in her temperature. So, you can use the basal body temperature (BBT) method to chart your body’s temperature every single morning to determine whether or not you are ovulating.
HOW DO I USE THE BBT METHOD AND CHART?
You will need to chart on a calendar your BBT every day by taking your temperature with a thermometer.
- It is best to get a special, large-scale thermometer that only registers 96 to 100°F. It will be much easier to read. You can buy a basal thermometer at most pharmacies.
- Take your temperature at as close to the same time every morning as possible, as soon as you wake up, after a solid block of sleep, before moving around or eating.
- Record your temperature as soon as possible after taking it.
- You can take your temperature orally or vaginally, but choose one and be consistent.
Temperature varies slightly from person to person, but pregnancy is most likely when a woman’s temperature is between 36° and 38° degrees. Before ovulation, 35.5° to 36° C is normal for most women. After ovulation, during your most fertile period, 36° to 38°C is normal.
As you can see, the changes in your temperature will be in fractions of a degree — from 1/10 to 1/2 a degree, so it is very important to carefully monitor and record your temperature.
If you need more information or want to talk to a healthcare provider about any of these methods or alternative ways to prevent or delay your next pregnancy.