Digital Ovulation Thermometers – 2 decimal places
If you want to begin charting your ovulation using your basal body temperature then a reliable thermometer is needed. By taking your temperature daily throughout your cycle you can confirm when ovulation has taken place and start to get an idea about the regularity of your cycle and when you are most likely fertile. I highly recommend this thermometer from ‘Baby Mad’. It is cheap but great quality and I own two of these myself which I have used with no issues for 4 years (with the same battery). I prefer to measure my temperature in centigrade but they also sell a version that measures in Fahrenheit.
You don’t need anything expensive to track your ovulation but there are more expensive, higher quality thermometers if you prefer, such as this one by Ferometer Vinca which has blue tooth and an app for your phone. This thermometer has been given 4 or 5 stars by 78% of Amazon customers.
There is also this clever thermometer by Ovy which is quite nice as well as it sends your temperatures straight to their phone app. This thermometer has been given 5 stars by 82% of Amazon customers.
How to calculate your ovulation?
When trying for a baby, you probably ask yourself every cycle ‘when will I ovulate’. You can use an online ovulation calendar to calculate your ovulation date, but these just ask you to input your average cycle length. They will probably place your ovulation date around 14 days before your next period is due or halfway through your cycle which may be fine for many women. It is not helpful however, for women with irregular cycles or for women with longer or shorter than average luteal phases. The only reliable way to calculate your ovulation date and to predict when you may next ovulate is to chart your cycles.
To chart your ovulation you need to record your lowest body temperature each day and it is advised to take your temperatures’ first thing in the morning, when you have just woken up. You should take your temperature as close to the same time each day as you can e.g. if you wake for work at 6-7am, take it at 6-7am every morning before you get out of bed. It is advised to start recording your daily temperatures at the beginning of a new cycle (cycle day 1) i.e. the first day of your period. The temperatures’ before ovulation will be your pre-ovulation temperatures’ and your baseline.
A day or so before you ovulate, you will get an increase in a hormone called luteinizing hormone (LH) which will give you a positive ovulation test AKA LH tests or OPK if you use them. As luteinizing hormone levels increase it reaches its threshold level and an egg is released. Once the egg is released, your levels of progesterone will start to increase which warms the body. Once you have ovulated you should see a rise in your basal body temperature (BBT) on your chart. You need to see at least 3 high temperatures’ above your pre-ovulation range for 3 consecutive mornings to confirm ovulation. They should then stay high until your period arrives or until you give birth, if you are lucky enough to fall pregnant.
You can chart your ovulation easily with a digital thermometer and once you have your baby you can go on to use it as a baby thermometer.
For more information on Charting your Ovulation check out my section on this ”here”.