How to Chart your Basal Body Temperature

I charted my BBT after my first miscarriage. A lot of people use this to learn about when they ovulate so they can try and get pregnant. I didn't have trouble getting pregnant, but I wanted to learn more about my cycle and hormones so I started charting. Basically, your body's temperature will rise and fall very slightly as the hormones in your body change throughout your cycle. Before ovulation it's slightly lower, the day after ovulation it spikes, and then it stay high for about 14days. When it drops you get your period.

Charting is very simple. First, get an accurate thermometer. You can buy special BBT ones, but any thermometer will do as long as it shows at least tenths of a degree (ex. 98.6). BBT thermometers usually show thousandths of a degree (ex. 98.62).

Every morning when you wake up take you temperature RIGHT AWAY. do it before you even get out of bed. Any activity can affect your temperature and skew the results. Then record the temperature on a chart. If you bought a BBT thermometer they often come with a paper chart, but you can also download them online. I used an app on my phone to record my data.

After a few months of charting you'll be able to see what day in your cycle your temperature rises and falls. This will give you an idea of when you ovulate so you can have sex at the right time for pregnancy.

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Moms Expertise
    05/08/14
    Beth
    Great advice! I never charted, but I do have friends that did. Do you know if the tenth of a degree is enough for most people, or do you really need to take it out to the thousandth?
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      05/08/14
      8Theresa Gould
      Thanks for sharing. I've never charted or taken my basal temperature.
      0
      About Taylor
      Current: Chanhassen, Minnesota
      Birth: July 26
      On Moms.com since: Dec 18, 2013
      I'm the proud mama of my daughter Avery, born on June 6, 2013. I'm 26 years old, I work from home as a graphic designer, I will be testing for my 5th degree black belt in Tae Kwon Do in 2015. My husband, Derek, and I have been happily married for 3 years.