hello thank you for asking the question. you are on regular oral contraceptive pills sronyx(levonorgesterol and ethinyl estradiol). Regular daily intake of oral contraceptive pills prevent pregnancy by interfere with fertilization and implantation. so if you are on regular pill then why you are worry about pregnancy. oc pills are used to prevent pregnancy while there is unprotected sex. so why you are thinking to take emergency pill. there is no need of emergency pill if you are taking oc pill regulary to prevent pregnancy hope this will helpful to you.