Gestational age, you want to ON when to display the birth date on the calendar. If this is ON, the physiological prediction, ovulation prediction will no longer be displayed.
Setting due date
Baby due date that is currently set is displayed.
Select due date
Change the baby due date manually. (Past due date does not change)
Set after 280days from the last period
Change the baby due date from the end of the period start date after 280 days. (Past due date does not change)
Setting weeks of pregnancy
Updates last period as 0weeks 0days
The last of the period starting date it will show the number of 40 weeks of pregnancy week as 0 week 0 days.
Updates the due as 40weeks0days
And back the expected baby due date as 40 weeks 0 days to display the number of 40 weeks of pregnancy week.