Bbt chart pregnant

What is basal body temperature?

Your basal temperature simply means ‘the lowest temperature of your body at rest’.

For most women, an average BBT is around 36.1 to 36.4°C. This temperature remains about the same for most of the month, but drops slightly just before ovulation and then spikes just after ovulation.

Basal body temperature ovulation

The temperature then remains high until your period arrives.

The increase and decrease in temperature around ovulation is as slight as 0.25 to 0.5°C. For this reason, BBT charting is best used alongside other methods when trying to conceive (such as ovulation predictor kits), because while it helps you build up a picture of your menstrual cycle, it’s not 100% reliable on its own.

That said, it’s quite good fun – particularly if you’re a fan of a new notebook.

Do you know when you're ovulating? Try our ovulation calculator

How do I chart my basal body temperature?

In order to measure your BBT, you’ll need:

• a digital basal thermometer (an ordinary one won’t show the small increases you’re watching for)

• an alarm clock to

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