My girlfriend & I had a session of oral sex on 1st of april i.e. two months bak which involved brushing of our genitals in which we had our clothes on....but i pre-ejaculated n my semen brushed onto my lower that i was wearing...precautionarily she took an i-pill(an emergency contraceptive pill) on da 2nd of april within 18 hrs of the incident.....she recieved a discharge flow as a result of the pill on da 8th which lasted till 11th.....her periods were due on da 23rd which got delayed to 8th of next month (can be attributed as another side-effect of pill) which according to her were regular in flow....but it has been 8th of this month n she complains about not having her subsequent cycle as yet...please help me in dis regard...as whether this could be another case of delayed periods or could she be pregnant....