Ava is only searching for a biphasic parameter pattern in the current cycle - retrospective assessments of past cycles cannot be done.

Changing the period days of a cycle can have a big impact on the assessment of the biphasic pattern. Since the assessment is not repeated, Ava removes the confirmation checkmark. For this reason, as well as for maximizing Ava’s accuracy, don’t forget to enter the first day of your period as well as your total period length correctly in each cycle.   ​