When finding it difficult to conceive many couples have relied on the use of an ovulation chart. Charting your BBT, or basal body temperature, is an extremely easy way to help pinpoint fertile days during your cycle. During a woman’s cycle many things happen to let her know she is about to ovulate, the rise and fall of your BBT is just another of these signs. Right before you ovulate your body temperature will drop slightly and then jump again after ovulation, this jump can be anywhere between a tenth of a degree to a full degree Fahrenheit. To notice changes this minute in nature you need a special thermometer call a “basal body thermometer”, the use of this special thermometer will make your ovulation chart more accurate.
The best way to measure basal body temperature (BBT), is to be consistent. The first day of your period is the best day to start. You must have slept for at least four hours, and then must take the reading as soon as you wake up. You have to take the reading for at least five minutes while you are still lying in bed, and record the results on the chart that is usually included in the package, or alternatively, you can download blank charts from the internet for no charge.
There are a few things to remember about taking and recording BBT. Do not eat, drink or exercise before taking a reading. If you are taking the reading vaginally or orally, keep using the same site for each reading every time. Keep the thermometer in place for as long as is directed on the package (digital models generally work faster and make a noise to indicate that the reading is complete). Use a digital oral thermometer and record the results on a graph to better visualize what trends are occurring. Free computer graphing and printable sheets are available on a website I’ll share with you in a moment.
According to the American Society for Reproductive Medicine, a rise in progesterone creates a minimum rise in temperature of 0.5 degrees Fahrenheit. If this increase lasts for a few days, this indicates that ovulation has already occurred. Remember that the BBT measurements are best for predicting your own body patterns in your monthly cycle. Through careful taking and recording of your BBT you can predict when you are likely to ovulate in your cycle to allow you to plan intercourse around this time in your next cycle.
There are a few things you should know that can alter the results of your BBT. Shift workers may have some problems using this method of ovulation charting because, it is best to take your BBT at the same time everyday and sometimes this may not be possible for shift workers. Also women with insomnia and other sleep disorders may have a problem charting and tracking this appropriately. Other things that may alter the results or give you inaccurate results are: sickness, jetlag, stress, anxiety, smoking, and using an electric blanket. So try to avoid all these things while charting your BBT.
As mentioned earlier there can be many factors that influence the accuracy of your readings. Consistency is the key, but we all know how unpredictable our lives can be at times. If you have troubles one month, keep going. Record BBT as faithfully as you can, and remember that the charting you are recording is going to give you an indication for when to try to conceive in the future cycles. The longer and more consistent you maintain your ovulation chart, the better you will be able to predict your ovulation times within your cycle. Recording your basal body temperature with an ovulation chart is an effective way to start planning to conceive.