After stopping hormonal contraceptives, your body may need some time to "adjust" again. This time varies from woman to woman. You can use trackle immediately after stopping your hormonal contraceptive. If you have a bleed after stopping (= abortion bleed), you can enter this bleed as your first menstruation in the trackle app to start your first trackle cycle. 

trackle will then assume that you are fertile until ovulation can be detected according to the rules of the symptothermal method (consisting of a detected temperature peak and cervical mucus peak). 

We therefore recommend that you wear your sensor from the 5th day after the start of your bleed and that you observe and record your cervical mucus daily.