You might have noticed that after ovulation, your temperature tends to rise. Or if you’re new to us, now you know 😉 This is also an indicator for the app to know how to calculate your green and red days.
Your temperature is the main indicator the algorithm behind the app takes into account. This is because your temperature is linked to the hormone levels in your body, and changes throughout your cycle. Once an egg is released from the ovaries (ovulation), your body starts producing the hormone progesterone. This hormone prepares the lining of the uterus for possible implantation and also causes your temperature to rise.
Progesterone is actually only produced in high amounts once ovulation has occurred and once you have several high temperature readings the app will confirm that you have ovulated. You might even notice that you feel a little warmer at night in bed.
So the days before your temperature rise are the most fertile days of your cycle (be sure to use protection if you are preventing a pregnancy.)
Your temperature will drop back down again if the egg has not been fertilised, you will see that this will happen just before or during your period. And a new cycle begins again. On the other hand when a pregnancy occurs the temperature remains elevated and does not drop.
So you will see that you have a relatively lower temperature in the first phase of your cycle (follicular phase) and a rise in the second phase (luteal phase).
Hope that clears things up for you Cyclers. Have you noticed your temperature rise, or do you even feel it ? Let us know your thoughts in the comments below.