Are there any studies on the contraceptive efficacy of the vaginal disc when used on a day other than day 1 of bleeding?

If you use a contraceptive disc (e.g. Ginoring) between the 2nd and 5th day of the cycle, full contraceptive protection is provided after at least 7 consecutive days. However, due to the unspecified effectiveness of contraception when using a disc on another day of the cycle, it is recommended to use an additional contraceptive method until the end of the first cycle. It is considered that effective contraception is provided only from the next package. No efficacy studies shall be conducted in such cases. Contraceptive protection results from the mechanism of action of the disc (m.in inhibition of ovulation). If you are worried about the effectiveness of the disc, I encourage you to start using it in accordance with the leaflet, i.e. on the 1st day of menstrual bleeding. In this case, contraceptive protection is provided from day 1: https://www.gdziepolek.pl/produkty/96195/ginoring-przyrzad/ulotka/244491 Until bleeding occurs, I encourage you to use another, non-hormonal method of contraception. I encourage you to familiarize yourself with additional materials that may be useful: https://www.gdziepolek.pl/artykuly/jak-prawidlowo-stosowac-antykoncepcje https://www.gdziepolek.pl/artykuly/antykoncepcja-hormonalna