No, pills will never 100% protect you from getting pregnant. Lalo na if you don’t take it religiously. Having sex risks you of getting pregnant regardless of the contraceptive. If you 100% don’t want to get pregnant, do not engage in sex. If you want to be “safe” use a condom while taking pills and wag magcucum inside. Please remember na no contraceptive can 100% prevent pregnancies. Misconception yun so be careful.