That shit has 89% efficency which means its 89% that itll most likely work. My bitch got on that & she was koo. Jus make sure your chick dont stress herself when she dont feel her period comin' normally. Cuzz thatll further extend her period & youll be shitting bricks thinkin' she is pregnent.
If all fails, hug her from the back & squeeze til you know that baby's cell is dead. During the night, your bitch will be squirting blood evrywhere but it's worth it.