around the ovulation period without ejaculation can cause pregnancy
as the pre-ejaculate
contains enough sperms to cause fertilization. As you have taken the emergency pill, you are likely to have hormonal disturbance for some time and your period may be delayed. If you do not get your period on your expected date, you should see your doctor within the next two weeks for an evaluation and guidance. In the future, please use proper contraception
and reserve the pill only for real emergencies. Take care.