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Sexual intercourse even without ejaculation can result in pregnancy
because the pre-ejaculatory fluid may also contain sperms, thought the chances are less. In your case as you have taken the emergency contraceptive pill
within 8 hours, it should protect you and there is >95% chance that you will not get pregnant. My advise for you is to wait for you next menstrual period, if you get it then you are not pregnant. If you miss your period then do a urine pregnancy test on a morning sample of urine to know about your pregnancy status. Hope that answers your question.