Prediction is consistantly wrong. What do I need to change I the settings?

Question

Hi! 
I'm very regular when it comes to my periods. However, every month when I add my period, the fertility window changes to a different week. 
There's 23 days between periods. However, the calendar continuously shows 30 days between periods. Because of this the fertility window is always incorrect.

How can I correct this? I have added a 23 day cycle to my personal settings. 
Thanks in advance!

Answer

Whenever you start your period, are you going into the calendar (or wherever it was) and clicking on "my period started"? As long as you are always logging when your period starts, after a few months it should get better with predictions (as long as you're pretty regular). If you ever have an abnormally long or short cycle though, it will throw off the predictions for a couple months (which gets fixed after a few months of logging).

Answer

Thanks Lisa! 
I have been very regular, so hopefully the app will get the hang of it soon ;-)

Prediction is consistantly wrong. What do I need to change I the settings?

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