Properly used birth control pills such as Vines are a very effective protection against pregnancy. The appearance of bleeding means that the medicine is working properly and that there has been no pregnancy. If, despite this, you want to make additional sure, you can perform a pregnancy test after 14 days after intercourse. However, as I have already written - in my opinion there is no such need. I enclose additional information about Vines and our studies that may be helpful: https://www.gdziepolek.pl/produkty/81748/vines-tabletki-powlekane/apteki https://www.gdziepolek.pl/artykuly/jak-prawidlowo-stosowac-antykoncepcje https://www.gdziepolek.pl/artykuly/test-ciazowy-jaki-wybrac-i-kiedy-zrobic