Hello since you have already taken emergency contraception the chances of getting pregnant is very less and do moreover you have also started on regular OCP is so because of the hormonal changes the chances of pregnancy will be low down but that I don't think you need to worry about it but then I suggest you not to make some contraceptives that is regular on regular basis as well as emergency contraceptives instead of that for double protection if you wish you can use barrier methods like condoms thank you