After the first sexual certificate or act has accepted 1 tablet postinora, in 12 hours eshch...

[Alisa]

After the first sexual certificate or act has accepted 1 tablet postinora, in 12 hours 1 more tablet.
There has passed or There has taken place week - bleedings (3 days, not monthly) have begun. Now a delay for 4 days (from the moment of last monthly). Why?

[Pasenjuk A.M.]

Because at occurrence of a bleeding after reception postinora it is necessary to consider or count a cycle from the first day of a bleeding.