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A Basal Thermometer

One of the main methods recommended by the NHS for tracking your fertility and increasing your chances of getting pregnant is monitoring your BBT - your basal body temperature. You’ll need a dedicated thermometer for this, and today OvuSense is looking at BBT tracking to help you make a decision about whether it’s right for you, and how you’re going to pick your equipment.

How Does BBT Tracking Work?

Like most other kinds of fertility monitoring, BBT tracking helps you increase your chances of conceiving by identifying and predicting when you are going to ovulate. When you track your Basal Body Temperature, you take your temperature every morning, as soon as you wake up and record the results. This gives you access to your basal temperature level: the low level your body temperature drops to during a full night’s sleep as your metabolism slows down to save energy. Different bodily processes and cycles cause changes to this minimum level, and if you know the right pattern to look for in your average BBT, you can identify ovulation.

What are you Looking For?

Ovulation causes a rise in your average BBT of .4 of a degree Celsius for forty eight hours: if you spot this pattern it’s a clear indicator you are ovulating. Some women experience a drop of the same amount for the three days before ovulation, but this is not guaranteed and you shouldn’t rely on it happening unless you’ve observed it happening on your chart very regularly in the past.

Charting BBT

When you’re tracking your basal body temperature, you’re committing to a process that takes time. Before you can look for those patterns, you need to establish what you average BBT: you can’t look for a rise above normal if you don’t know what normal is!

It can also help to make a graph of your results. Whether you do this manually, on graph paper, or digitally, it provides a visual representation of your temperature over time, which makes spotting that rise much easier.

What You Need in a Thermometer

When you’re tracking your Basal Body Temperature, it’s important to have a dedicated thermometer for the task, firstly because it needs some special qualities and secondly because you can get more accurate readings by taking your temperature vaginally or anally, so you don’t want to mix it up with the family thermometer!

You need a basal thermometer that delivers an accurate and unambiguous result: if you can misread the display you could record the wrong information and miss an opportunity to get pregnant. A digital thermometer that’s accurate to within tenths of a degree provides an unambiguous result that’s accurate to the level you need!

Find out more about core temperature technology and fertility here