Hello THanks for writing to us with your health concern. From the episode of unprotected sex, pregnancy might result. When taken within 72 hours, I pill is effective in preventing pregnancy in more than 95 % of cases. Fingering has never been known to result in a pregnancy. So yes you would not know until you miss your period. If , and when , you miss your period, please take a pregnancy test. Sometimes, the I pill itself will prepone or postpone your normal expected period by a week or more. So it gets more confusing. Just to be on the safer side, take a pregnancy test 4 weeks after unprotected sex. Use protection always in the future. All the best. Take care.