What is the likelihood of fertilization after unprotected intercourse?
It is difficult to evaluate because the likelihood of being pregnant depends on several factors the time of intercourse with respect to the timing of ovulation the usual length of the cycle the occurrence of other acts of unprotected intercourse in the same cycle. In general, the risk of pregnancy is higher if the unprotected intercourse took place on the day of ovulation, or on the 4 to 5 days preceding ovulation. However, since the date of ovulation is unpredictable, any unprotected intercourse, at any time of the cycle, can lead to a pregnancy. Therefore if you have the slightest doubt, and you don’t wish to become pregnant, do not hesitate to use emergency contraception without delay.
