A basal body thermometer is used to record your basal body temperature (BBT) for charting your fertility to predict ovulation so you can time intercourse for getting pregnant during your most fertile days.
Your BBT is your body temperature just upon waking in the morning (after at least 3 hours of sleep, though 5+ hours is best).
Using a basal thermometer is best when it comes to charting for fertility. It's more accurate than a regular fever device for showing minor rise and falls that are necessary to determine ovulation. Most basal fertility thermometers are accurate to .1 degree.
A basal body thermometer records body heat at 1/100th of a degree rather than 1/10th like regular ones do. For example: 96.54 rather than 96.5 or 96.56 rather than 96.6.
On regular fever equipment, you may believe you are ovulating because you think your temp rose by 1/10th. When it actually rose only 2/100th. That's a big difference when it comes to charting and predicting ovulation.
I believe that digital basal thermometers are best for several reasons. They are easier to read. Most will save several temps at a time and all will at least save the last reading so you can record the temp when you get fully awake.
Have you tried to take your temperature first thing when you wake up? I don't know about you, but I almost always forget to record right away. Something about my brain still being half asleep. Anyway... If you prefer glass, that's OK, too.
Digital basal body thermometers are faster and beep to let you know when it's done. I've even been woken back up by the beep with mouth hanging open. When that happens, don't even look at the temp. Stick it back in and start over.
Believe me, fretting over which number is more accurate will drive you nuts. Just record the second temp and leave it at that. Because the first number can't be accurate with your mouth open. But TTC brain will give you all sorts of reasons why it just might be. Don't believe it. LOL.
See the Basal Body Temperature (BBT) page for more information on recording your BBT.
The basal body thermometer that I use is from Fairhaven Health. They have excellent customer service and offer free shipping.
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Basal Body Temperature (BBT) | Ovulation Predictor Kits | Fertility Monitors | Cervical Mucus | Fertile Cervical Mucus vs Hostile Cervical Mucus | Cervical Position | Ovulation Pain and Cramps | Ovulation Bleeding and Spotting | Best Time to Get Pregnant | Tips for Getting Pregnant | Days to Get Pregnant | Fertility Cleanse | Fertility Herbs | Getting Pregnant Positions | Most Fertile Days | Human Egg Fertilization | Ovulation Cycle | Two Week Wait | When Does Ovulation Occur? | How Long to Get Pregnant |
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